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Member "kea-1.6.2/COPYING" (21 Feb 2020, 29385 Bytes) of package /linux/misc/kea-1.6.2.tar.gz:

As a special service "Fossies" has tried to format the requested text file into HTML format (style: standard) with prefixed line numbers. Alternatively you can here view or download the uninterpreted source code file. See also the latest Fossies "Diffs" side-by-side code changes report for "COPYING": 1.6.1_vs_1.6.2.

    1 Copyright (C) 2009-2020 Internet Systems Consortium, Inc. ("ISC")
    3 This Source Code Form is subject to the terms of the Mozilla Public
    4 License, v. 2.0. If a copy of the MPL was not distributed with this
    5 file, You can obtain one at http://mozilla.org/MPL/2.0/. Full
    6 text is also included below.
    8 -----------------------------------------------------------------------------
   10 The Cassandra backend code and support for Google benchmark is distributed under
   11 the Apache License, Version 2.0. The text is available at
   12 http://www.apache.org/licenses/LICENSE-2.0. Full text is also included below in
   13 this file. Both features are optional and are disabled by default.
   15 -----------------------------------------------------------------------------
   17 For your convenience, full text of MPL 2.0 and Apache 2.0 licenses is available
   18 below:
   20 --- MPL 2.0 license ---------------------------------------------------------
   22 Mozilla Public License Version 2.0
   23 ==================================
   25 1. Definitions
   26 --------------
   28 1.1. "Contributor"
   29     means each individual or legal entity that creates, contributes to
   30     the creation of, or owns Covered Software.
   32 1.2. "Contributor Version"
   33     means the combination of the Contributions of others (if any) used
   34     by a Contributor and that particular Contributor's Contribution.
   36 1.3. "Contribution"
   37     means Covered Software of a particular Contributor.
   39 1.4. "Covered Software"
   40     means Source Code Form to which the initial Contributor has attached
   41     the notice in Exhibit A, the Executable Form of such Source Code
   42     Form, and Modifications of such Source Code Form, in each case
   43     including portions thereof.
   45 1.5. "Incompatible With Secondary Licenses"
   46     means
   48     (a) that the initial Contributor has attached the notice described
   49         in Exhibit B to the Covered Software; or
   51     (b) that the Covered Software was made available under the terms of
   52         version 1.1 or earlier of the License, but not also under the
   53         terms of a Secondary License.
   55 1.6. "Executable Form"
   56     means any form of the work other than Source Code Form.
   58 1.7. "Larger Work"
   59     means a work that combines Covered Software with other material, in
   60     a separate file or files, that is not Covered Software.
   62 1.8. "License"
   63     means this document.
   65 1.9. "Licensable"
   66     means having the right to grant, to the maximum extent possible,
   67     whether at the time of the initial grant or subsequently, any and
   68     all of the rights conveyed by this License.
   70 1.10. "Modifications"
   71     means any of the following:
   73     (a) any file in Source Code Form that results from an addition to,
   74         deletion from, or modification of the contents of Covered
   75         Software; or
   77     (b) any new file in Source Code Form that contains any Covered
   78         Software.
   80 1.11. "Patent Claims" of a Contributor
   81     means any patent claim(s), including without limitation, method,
   82     process, and apparatus claims, in any patent Licensable by such
   83     Contributor that would be infringed, but for the grant of the
   84     License, by the making, using, selling, offering for sale, having
   85     made, import, or transfer of either its Contributions or its
   86     Contributor Version.
   88 1.12. "Secondary License"
   89     means either the GNU General Public License, Version 2.0, the GNU
   90     Lesser General Public License, Version 2.1, the GNU Affero General
   91     Public License, Version 3.0, or any later versions of those
   92     licenses.
   94 1.13. "Source Code Form"
   95     means the form of the work preferred for making modifications.
   97 1.14. "You" (or "Your")
   98     means an individual or a legal entity exercising rights under this
   99     License. For legal entities, "You" includes any entity that
  100     controls, is controlled by, or is under common control with You. For
  101     purposes of this definition, "control" means (a) the power, direct
  102     or indirect, to cause the direction or management of such entity,
  103     whether by contract or otherwise, or (b) ownership of more than
  104     fifty percent (50%) of the outstanding shares or beneficial
  105     ownership of such entity.
  107 2. License Grants and Conditions
  108 --------------------------------
  110 2.1. Grants
  112 Each Contributor hereby grants You a world-wide, royalty-free,
  113 non-exclusive license:
  115 (a) under intellectual property rights (other than patent or trademark)
  116     Licensable by such Contributor to use, reproduce, make available,
  117     modify, display, perform, distribute, and otherwise exploit its
  118     Contributions, either on an unmodified basis, with Modifications, or
  119     as part of a Larger Work; and
  121 (b) under Patent Claims of such Contributor to make, use, sell, offer
  122     for sale, have made, import, and otherwise transfer either its
  123     Contributions or its Contributor Version.
  125 2.2. Effective Date
  127 The licenses granted in Section 2.1 with respect to any Contribution
  128 become effective for each Contribution on the date the Contributor first
  129 distributes such Contribution.
  131 2.3. Limitations on Grant Scope
  133 The licenses granted in this Section 2 are the only rights granted under
  134 this License. No additional rights or licenses will be implied from the
  135 distribution or licensing of Covered Software under this License.
  136 Notwithstanding Section 2.1(b) above, no patent license is granted by a
  137 Contributor:
  139 (a) for any code that a Contributor has removed from Covered Software;
  140     or
  142 (b) for infringements caused by: (i) Your and any other third party's
  143     modifications of Covered Software, or (ii) the combination of its
  144     Contributions with other software (except as part of its Contributor
  145     Version); or
  147 (c) under Patent Claims infringed by Covered Software in the absence of
  148     its Contributions.
  150 This License does not grant any rights in the trademarks, service marks,
  151 or logos of any Contributor (except as may be necessary to comply with
  152 the notice requirements in Section 3.4).
  154 2.4. Subsequent Licenses
  156 No Contributor makes additional grants as a result of Your choice to
  157 distribute the Covered Software under a subsequent version of this
  158 License (see Section 10.2) or under the terms of a Secondary License (if
  159 permitted under the terms of Section 3.3).
  161 2.5. Representation
  163 Each Contributor represents that the Contributor believes its
  164 Contributions are its original creation(s) or it has sufficient rights
  165 to grant the rights to its Contributions conveyed by this License.
  167 2.6. Fair Use
  169 This License is not intended to limit any rights You have under
  170 applicable copyright doctrines of fair use, fair dealing, or other
  171 equivalents.
  173 2.7. Conditions
  175 Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted
  176 in Section 2.1.
  178 3. Responsibilities
  179 -------------------
  181 3.1. Distribution of Source Form
  183 All distribution of Covered Software in Source Code Form, including any
  184 Modifications that You create or to which You contribute, must be under
  185 the terms of this License. You must inform recipients that the Source
  186 Code Form of the Covered Software is governed by the terms of this
  187 License, and how they can obtain a copy of this License. You may not
  188 attempt to alter or restrict the recipients' rights in the Source Code
  189 Form.
  191 3.2. Distribution of Executable Form
  193 If You distribute Covered Software in Executable Form then:
  195 (a) such Covered Software must also be made available in Source Code
  196     Form, as described in Section 3.1, and You must inform recipients of
  197     the Executable Form how they can obtain a copy of such Source Code
  198     Form by reasonable means in a timely manner, at a charge no more
  199     than the cost of distribution to the recipient; and
  201 (b) You may distribute such Executable Form under the terms of this
  202     License, or sublicense it under different terms, provided that the
  203     license for the Executable Form does not attempt to limit or alter
  204     the recipients' rights in the Source Code Form under this License.
  206 3.3. Distribution of a Larger Work
  208 You may create and distribute a Larger Work under terms of Your choice,
  209 provided that You also comply with the requirements of this License for
  210 the Covered Software. If the Larger Work is a combination of Covered
  211 Software with a work governed by one or more Secondary Licenses, and the
  212 Covered Software is not Incompatible With Secondary Licenses, this
  213 License permits You to additionally distribute such Covered Software
  214 under the terms of such Secondary License(s), so that the recipient of
  215 the Larger Work may, at their option, further distribute the Covered
  216 Software under the terms of either this License or such Secondary
  217 License(s).
  219 3.4. Notices
  221 You may not remove or alter the substance of any license notices
  222 (including copyright notices, patent notices, disclaimers of warranty,
  223 or limitations of liability) contained within the Source Code Form of
  224 the Covered Software, except that You may alter any license notices to
  225 the extent required to remedy known factual inaccuracies.
  227 3.5. Application of Additional Terms
  229 You may choose to offer, and to charge a fee for, warranty, support,
  230 indemnity or liability obligations to one or more recipients of Covered
  231 Software. However, You may do so only on Your own behalf, and not on
  232 behalf of any Contributor. You must make it absolutely clear that any
  233 such warranty, support, indemnity, or liability obligation is offered by
  234 You alone, and You hereby agree to indemnify every Contributor for any
  235 liability incurred by such Contributor as a result of warranty, support,
  236 indemnity or liability terms You offer. You may include additional
  237 disclaimers of warranty and limitations of liability specific to any
  238 jurisdiction.
  240 4. Inability to Comply Due to Statute or Regulation
  241 ---------------------------------------------------
  243 If it is impossible for You to comply with any of the terms of this
  244 License with respect to some or all of the Covered Software due to
  245 statute, judicial order, or regulation then You must: (a) comply with
  246 the terms of this License to the maximum extent possible; and (b)
  247 describe the limitations and the code they affect. Such description must
  248 be placed in a text file included with all distributions of the Covered
  249 Software under this License. Except to the extent prohibited by statute
  250 or regulation, such description must be sufficiently detailed for a
  251 recipient of ordinary skill to be able to understand it.
  253 5. Termination
  254 --------------
  256 5.1. The rights granted under this License will terminate automatically
  257 if You fail to comply with any of its terms. However, if You become
  258 compliant, then the rights granted under this License from a particular
  259 Contributor are reinstated (a) provisionally, unless and until such
  260 Contributor explicitly and finally terminates Your grants, and (b) on an
  261 ongoing basis, if such Contributor fails to notify You of the
  262 non-compliance by some reasonable means prior to 60 days after You have
  263 come back into compliance. Moreover, Your grants from a particular
  264 Contributor are reinstated on an ongoing basis if such Contributor
  265 notifies You of the non-compliance by some reasonable means, this is the
  266 first time You have received notice of non-compliance with this License
  267 from such Contributor, and You become compliant prior to 30 days after
  268 Your receipt of the notice.
  270 5.2. If You initiate litigation against any entity by asserting a patent
  271 infringement claim (excluding declaratory judgment actions,
  272 counter-claims, and cross-claims) alleging that a Contributor Version
  273 directly or indirectly infringes any patent, then the rights granted to
  274 You by any and all Contributors for the Covered Software under Section
  275 2.1 of this License shall terminate.
  277 5.3. In the event of termination under Sections 5.1 or 5.2 above, all
  278 end user license agreements (excluding distributors and resellers) which
  279 have been validly granted by You or Your distributors under this License
  280 prior to termination shall survive termination.
  282 ************************************************************************
  283 *                                                                      *
  284 *  6. Disclaimer of Warranty                                           *
  285 *  -------------------------                                           *
  286 *                                                                      *
  287 *  Covered Software is provided under this License on an "as is"       *
  288 *  basis, without warranty of any kind, either expressed, implied, or  *
  289 *  statutory, including, without limitation, warranties that the       *
  290 *  Covered Software is free of defects, merchantable, fit for a        *
  291 *  particular purpose or non-infringing. The entire risk as to the     *
  292 *  quality and performance of the Covered Software is with You.        *
  293 *  Should any Covered Software prove defective in any respect, You     *
  294 *  (not any Contributor) assume the cost of any necessary servicing,   *
  295 *  repair, or correction. This disclaimer of warranty constitutes an   *
  296 *  essential part of this License. No use of any Covered Software is   *
  297 *  authorized under this License except under this disclaimer.         *
  298 *                                                                      *
  299 ************************************************************************
  301 ************************************************************************
  302 *                                                                      *
  303 *  7. Limitation of Liability                                          *
  304 *  --------------------------                                          *
  305 *                                                                      *
  306 *  Under no circumstances and under no legal theory, whether tort      *
  307 *  (including negligence), contract, or otherwise, shall any           *
  308 *  Contributor, or anyone who distributes Covered Software as          *
  309 *  permitted above, be liable to You for any direct, indirect,         *
  310 *  special, incidental, or consequential damages of any character      *
  311 *  including, without limitation, damages for lost profits, loss of    *
  312 *  goodwill, work stoppage, computer failure or malfunction, or any    *
  313 *  and all other commercial damages or losses, even if such party      *
  314 *  shall have been informed of the possibility of such damages. This   *
  315 *  limitation of liability shall not apply to liability for death or   *
  316 *  personal injury resulting from such party's negligence to the       *
  317 *  extent applicable law prohibits such limitation. Some               *
  318 *  jurisdictions do not allow the exclusion or limitation of           *
  319 *  incidental or consequential damages, so this exclusion and          *
  320 *  limitation may not apply to You.                                    *
  321 *                                                                      *
  322 ************************************************************************
  324 8. Litigation
  325 -------------
  327 Any litigation relating to this License may be brought only in the
  328 courts of a jurisdiction where the defendant maintains its principal
  329 place of business and such litigation shall be governed by laws of that
  330 jurisdiction, without reference to its conflict-of-law provisions.
  331 Nothing in this Section shall prevent a party's ability to bring
  332 cross-claims or counter-claims.
  334 9. Miscellaneous
  335 ----------------
  337 This License represents the complete agreement concerning the subject
  338 matter hereof. If any provision of this License is held to be
  339 unenforceable, such provision shall be reformed only to the extent
  340 necessary to make it enforceable. Any law or regulation which provides
  341 that the language of a contract shall be construed against the drafter
  342 shall not be used to construe this License against a Contributor.
  344 10. Versions of the License
  345 ---------------------------
  347 10.1. New Versions
  349 Mozilla Foundation is the license steward. Except as provided in Section
  350 10.3, no one other than the license steward has the right to modify or
  351 publish new versions of this License. Each version will be given a
  352 distinguishing version number.
  354 10.2. Effect of New Versions
  356 You may distribute the Covered Software under the terms of the version
  357 of the License under which You originally received the Covered Software,
  358 or under the terms of any subsequent version published by the license
  359 steward.
  361 10.3. Modified Versions
  363 If you create software not governed by this License, and you want to
  364 create a new license for such software, you may create and use a
  365 modified version of this License if you rename the license and remove
  366 any references to the name of the license steward (except to note that
  367 such modified license differs from this License).
  369 10.4. Distributing Source Code Form that is Incompatible With Secondary
  370 Licenses
  372 If You choose to distribute Source Code Form that is Incompatible With
  373 Secondary Licenses under the terms of this version of the License, the
  374 notice described in Exhibit B of this License must be attached.
  376 Exhibit A - Source Code Form License Notice
  377 -------------------------------------------
  379   This Source Code Form is subject to the terms of the Mozilla Public
  380   License, v. 2.0. If a copy of the MPL was not distributed with this
  381   file, You can obtain one at http://mozilla.org/MPL/2.0/.
  383 If it is not possible or desirable to put the notice in a particular
  384 file, then You may include the notice in a location (such as a LICENSE
  385 file in a relevant directory) where a recipient would be likely to look
  386 for such a notice.
  388 You may add additional accurate notices of copyright ownership.
  390 Exhibit B - "Incompatible With Secondary Licenses" Notice
  391 ---------------------------------------------------------
  393   This Source Code Form is "Incompatible With Secondary Licenses", as
  394   defined by the Mozilla Public License, v. 2.0.
  396 ---end of MPL 2.0 license ---------------------------------------------------
  398 --- Apache 2.0 license ------------------------------------------------------
  400                                  Apache License
  401                            Version 2.0, January 2004
  402                         http://www.apache.org/licenses/
  406    1. Definitions.
  408       "License" shall mean the terms and conditions for use, reproduction,
  409       and distribution as defined by Sections 1 through 9 of this document.
  411       "Licensor" shall mean the copyright owner or entity authorized by
  412       the copyright owner that is granting the License.
  414       "Legal Entity" shall mean the union of the acting entity and all
  415       other entities that control, are controlled by, or are under common
  416       control with that entity. For the purposes of this definition,
  417       "control" means (i) the power, direct or indirect, to cause the
  418       direction or management of such entity, whether by contract or
  419       otherwise, or (ii) ownership of fifty percent (50%) or more of the
  420       outstanding shares, or (iii) beneficial ownership of such entity.
  422       "You" (or "Your") shall mean an individual or Legal Entity
  423       exercising permissions granted by this License.
  425       "Source" form shall mean the preferred form for making modifications,
  426       including but not limited to software source code, documentation
  427       source, and configuration files.
  429       "Object" form shall mean any form resulting from mechanical
  430       transformation or translation of a Source form, including but
  431       not limited to compiled object code, generated documentation,
  432       and conversions to other media types.
  434       "Work" shall mean the work of authorship, whether in Source or
  435       Object form, made available under the License, as indicated by a
  436       copyright notice that is included in or attached to the work
  437       (an example is provided in the Appendix below).
  439       "Derivative Works" shall mean any work, whether in Source or Object
  440       form, that is based on (or derived from) the Work and for which the
  441       editorial revisions, annotations, elaborations, or other modifications
  442       represent, as a whole, an original work of authorship. For the purposes
  443       of this License, Derivative Works shall not include works that remain
  444       separable from, or merely link (or bind by name) to the interfaces of,
  445       the Work and Derivative Works thereof.
  447       "Contribution" shall mean any work of authorship, including
  448       the original version of the Work and any modifications or additions
  449       to that Work or Derivative Works thereof, that is intentionally
  450       submitted to Licensor for inclusion in the Work by the copyright owner
  451       or by an individual or Legal Entity authorized to submit on behalf of
  452       the copyright owner. For the purposes of this definition, "submitted"
  453       means any form of electronic, verbal, or written communication sent
  454       to the Licensor or its representatives, including but not limited to
  455       communication on electronic mailing lists, source code control systems,
  456       and issue tracking systems that are managed by, or on behalf of, the
  457       Licensor for the purpose of discussing and improving the Work, but
  458       excluding communication that is conspicuously marked or otherwise
  459       designated in writing by the copyright owner as "Not a Contribution."
  461       "Contributor" shall mean Licensor and any individual or Legal Entity
  462       on behalf of whom a Contribution has been received by Licensor and
  463       subsequently incorporated within the Work.
  465    2. Grant of Copyright License. Subject to the terms and conditions of
  466       this License, each Contributor hereby grants to You a perpetual,
  467       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
  468       copyright license to reproduce, prepare Derivative Works of,
  469       publicly display, publicly perform, sublicense, and distribute the
  470       Work and such Derivative Works in Source or Object form.
  472    3. Grant of Patent License. Subject to the terms and conditions of
  473       this License, each Contributor hereby grants to You a perpetual,
  474       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
  475       (except as stated in this section) patent license to make, have made,
  476       use, offer to sell, sell, import, and otherwise transfer the Work,
  477       where such license applies only to those patent claims licensable
  478       by such Contributor that are necessarily infringed by their
  479       Contribution(s) alone or by combination of their Contribution(s)
  480       with the Work to which such Contribution(s) was submitted. If You
  481       institute patent litigation against any entity (including a
  482       cross-claim or counterclaim in a lawsuit) alleging that the Work
  483       or a Contribution incorporated within the Work constitutes direct
  484       or contributory patent infringement, then any patent licenses
  485       granted to You under this License for that Work shall terminate
  486       as of the date such litigation is filed.
  488    4. Redistribution. You may reproduce and distribute copies of the
  489       Work or Derivative Works thereof in any medium, with or without
  490       modifications, and in Source or Object form, provided that You
  491       meet the following conditions:
  493       (a) You must give any other recipients of the Work or
  494           Derivative Works a copy of this License; and
  496       (b) You must cause any modified files to carry prominent notices
  497           stating that You changed the files; and
  499       (c) You must retain, in the Source form of any Derivative Works
  500           that You distribute, all copyright, patent, trademark, and
  501           attribution notices from the Source form of the Work,
  502           excluding those notices that do not pertain to any part of
  503           the Derivative Works; and
  505       (d) If the Work includes a "NOTICE" text file as part of its
  506           distribution, then any Derivative Works that You distribute must
  507           include a readable copy of the attribution notices contained
  508           within such NOTICE file, excluding those notices that do not
  509           pertain to any part of the Derivative Works, in at least one
  510           of the following places: within a NOTICE text file distributed
  511           as part of the Derivative Works; within the Source form or
  512           documentation, if provided along with the Derivative Works; or,
  513           within a display generated by the Derivative Works, if and
  514           wherever such third-party notices normally appear. The contents
  515           of the NOTICE file are for informational purposes only and
  516           do not modify the License. You may add Your own attribution
  517           notices within Derivative Works that You distribute, alongside
  518           or as an addendum to the NOTICE text from the Work, provided
  519           that such additional attribution notices cannot be construed
  520           as modifying the License.
  522       You may add Your own copyright statement to Your modifications and
  523       may provide additional or different license terms and conditions
  524       for use, reproduction, or distribution of Your modifications, or
  525       for any such Derivative Works as a whole, provided Your use,
  526       reproduction, and distribution of the Work otherwise complies with
  527       the conditions stated in this License.
  529    5. Submission of Contributions. Unless You explicitly state otherwise,
  530       any Contribution intentionally submitted for inclusion in the Work
  531       by You to the Licensor shall be under the terms and conditions of
  532       this License, without any additional terms or conditions.
  533       Notwithstanding the above, nothing herein shall supersede or modify
  534       the terms of any separate license agreement you may have executed
  535       with Licensor regarding such Contributions.
  537    6. Trademarks. This License does not grant permission to use the trade
  538       names, trademarks, service marks, or product names of the Licensor,
  539       except as required for reasonable and customary use in describing the
  540       origin of the Work and reproducing the content of the NOTICE file.
  542    7. Disclaimer of Warranty. Unless required by applicable law or
  543       agreed to in writing, Licensor provides the Work (and each
  544       Contributor provides its Contributions) on an "AS IS" BASIS,
  546       implied, including, without limitation, any warranties or conditions
  548       PARTICULAR PURPOSE. You are solely responsible for determining the
  549       appropriateness of using or redistributing the Work and assume any
  550       risks associated with Your exercise of permissions under this License.
  552    8. Limitation of Liability. In no event and under no legal theory,
  553       whether in tort (including negligence), contract, or otherwise,
  554       unless required by applicable law (such as deliberate and grossly
  555       negligent acts) or agreed to in writing, shall any Contributor be
  556       liable to You for damages, including any direct, indirect, special,
  557       incidental, or consequential damages of any character arising as a
  558       result of this License or out of the use or inability to use the
  559       Work (including but not limited to damages for loss of goodwill,
  560       work stoppage, computer failure or malfunction, or any and all
  561       other commercial damages or losses), even if such Contributor
  562       has been advised of the possibility of such damages.
  564    9. Accepting Warranty or Additional Liability. While redistributing
  565       the Work or Derivative Works thereof, You may choose to offer,
  566       and charge a fee for, acceptance of support, warranty, indemnity,
  567       or other liability obligations and/or rights consistent with this
  568       License. However, in accepting such obligations, You may act only
  569       on Your own behalf and on Your sole responsibility, not on behalf
  570       of any other Contributor, and only if You agree to indemnify,
  571       defend, and hold each Contributor harmless for any liability
  572       incurred by, or claims asserted against, such Contributor by reason
  573       of your accepting any such warranty or additional liability.
  577    APPENDIX: How to apply the Apache License to your work.
  579       To apply the Apache License to your work, attach the following
  580       boilerplate notice, with the fields enclosed by brackets "[]"
  581       replaced with your own identifying information. (Don't include
  582       the brackets!)  The text should be enclosed in the appropriate
  583       comment syntax for the file format. We also recommend that a
  584       file or class name and description of purpose be included on the
  585       same "printed page" as the copyright notice for easier
  586       identification within third-party archives.
  588    Copyright [yyyy] [name of copyright owner]
  590    Licensed under the Apache License, Version 2.0 (the "License");
  591    you may not use this file except in compliance with the License.
  592    You may obtain a copy of the License at
  594        http://www.apache.org/licenses/LICENSE-2.0
  596    Unless required by applicable law or agreed to in writing, software
  597    distributed under the License is distributed on an "AS IS" BASIS,
  598    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  599    See the License for the specific language governing permissions and
  600    limitations under the License.
  602 --- end of Apache 2.0 license -----------------------------------------------
  604 The ext/coroutine code is externally maintained and distributed under
  605 the Boost Software License, Version 1.0.  (See its accompanying file
  606 LICENSE_1_0.txt.)