annotate COPYING @ 2152:60d78294ea3a

Oookay... Travis's Trusty image is now too old for the bundled hg to be able to connect to Bitbucket after the latter switched off TLS 1.0 and 1.1 support this month. So we must either use a newer image, or find another workaround. Let's try the newer image first, since we'd probably be using that already if it had existed when we set this up
author Chris Cannam
date Thu, 06 Dec 2018 09:36:08 +0000
parents c053d985ec8c
children 40f16d6cbab2
rev   line source
Chris@350 1 GNU GENERAL PUBLIC LICENSE
Chris@350 2 Version 2, June 1991
Chris@350 3
Chris@350 4 Copyright (C) 1989, 1991 Free Software Foundation, Inc.
Chris@350 5 675 Mass Ave, Cambridge, MA 02139, USA
Chris@350 6 Everyone is permitted to copy and distribute verbatim copies
Chris@350 7 of this license document, but changing it is not allowed.
Chris@350 8
Chris@350 9 Preamble
Chris@350 10
Chris@350 11 The licenses for most software are designed to take away your
Chris@350 12 freedom to share and change it. By contrast, the GNU General Public
Chris@350 13 License is intended to guarantee your freedom to share and change free
Chris@350 14 software--to make sure the software is free for all its users. This
Chris@350 15 General Public License applies to most of the Free Software
Chris@350 16 Foundation's software and to any other program whose authors commit to
Chris@350 17 using it. (Some other Free Software Foundation software is covered by
Chris@350 18 the GNU Library General Public License instead.) You can apply it to
Chris@350 19 your programs, too.
Chris@350 20
Chris@350 21 When we speak of free software, we are referring to freedom, not
Chris@350 22 price. Our General Public Licenses are designed to make sure that you
Chris@350 23 have the freedom to distribute copies of free software (and charge for
Chris@350 24 this service if you wish), that you receive source code or can get it
Chris@350 25 if you want it, that you can change the software or use pieces of it
Chris@350 26 in new free programs; and that you know you can do these things.
Chris@350 27
Chris@350 28 To protect your rights, we need to make restrictions that forbid
Chris@350 29 anyone to deny you these rights or to ask you to surrender the rights.
Chris@350 30 These restrictions translate to certain responsibilities for you if you
Chris@350 31 distribute copies of the software, or if you modify it.
Chris@350 32
Chris@350 33 For example, if you distribute copies of such a program, whether
Chris@350 34 gratis or for a fee, you must give the recipients all the rights that
Chris@350 35 you have. You must make sure that they, too, receive or can get the
Chris@350 36 source code. And you must show them these terms so they know their
Chris@350 37 rights.
Chris@350 38
Chris@350 39 We protect your rights with two steps: (1) copyright the software, and
Chris@350 40 (2) offer you this license which gives you legal permission to copy,
Chris@350 41 distribute and/or modify the software.
Chris@350 42
Chris@350 43 Also, for each author's protection and ours, we want to make certain
Chris@350 44 that everyone understands that there is no warranty for this free
Chris@350 45 software. If the software is modified by someone else and passed on, we
Chris@350 46 want its recipients to know that what they have is not the original, so
Chris@350 47 that any problems introduced by others will not reflect on the original
Chris@350 48 authors' reputations.
Chris@350 49
Chris@350 50 Finally, any free program is threatened constantly by software
Chris@350 51 patents. We wish to avoid the danger that redistributors of a free
Chris@350 52 program will individually obtain patent licenses, in effect making the
Chris@350 53 program proprietary. To prevent this, we have made it clear that any
Chris@350 54 patent must be licensed for everyone's free use or not licensed at all.
Chris@350 55
Chris@350 56 The precise terms and conditions for copying, distribution and
Chris@350 57 modification follow.
Chris@350 58
Chris@350 59 GNU GENERAL PUBLIC LICENSE
Chris@350 60 TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
Chris@350 61
Chris@350 62 0. This License applies to any program or other work which contains
Chris@350 63 a notice placed by the copyright holder saying it may be distributed
Chris@350 64 under the terms of this General Public License. The "Program", below,
Chris@350 65 refers to any such program or work, and a "work based on the Program"
Chris@350 66 means either the Program or any derivative work under copyright law:
Chris@350 67 that is to say, a work containing the Program or a portion of it,
Chris@350 68 either verbatim or with modifications and/or translated into another
Chris@350 69 language. (Hereinafter, translation is included without limitation in
Chris@350 70 the term "modification".) Each licensee is addressed as "you".
Chris@350 71
Chris@350 72 Activities other than copying, distribution and modification are not
Chris@350 73 covered by this License; they are outside its scope. The act of
Chris@350 74 running the Program is not restricted, and the output from the Program
Chris@350 75 is covered only if its contents constitute a work based on the
Chris@350 76 Program (independent of having been made by running the Program).
Chris@350 77 Whether that is true depends on what the Program does.
Chris@350 78
Chris@350 79 1. You may copy and distribute verbatim copies of the Program's
Chris@350 80 source code as you receive it, in any medium, provided that you
Chris@350 81 conspicuously and appropriately publish on each copy an appropriate
Chris@350 82 copyright notice and disclaimer of warranty; keep intact all the
Chris@350 83 notices that refer to this License and to the absence of any warranty;
Chris@350 84 and give any other recipients of the Program a copy of this License
Chris@350 85 along with the Program.
Chris@350 86
Chris@350 87 You may charge a fee for the physical act of transferring a copy, and
Chris@350 88 you may at your option offer warranty protection in exchange for a fee.
Chris@350 89
Chris@350 90 2. You may modify your copy or copies of the Program or any portion
Chris@350 91 of it, thus forming a work based on the Program, and copy and
Chris@350 92 distribute such modifications or work under the terms of Section 1
Chris@350 93 above, provided that you also meet all of these conditions:
Chris@350 94
Chris@350 95 a) You must cause the modified files to carry prominent notices
Chris@350 96 stating that you changed the files and the date of any change.
Chris@350 97
Chris@350 98 b) You must cause any work that you distribute or publish, that in
Chris@350 99 whole or in part contains or is derived from the Program or any
Chris@350 100 part thereof, to be licensed as a whole at no charge to all third
Chris@350 101 parties under the terms of this License.
Chris@350 102
Chris@350 103 c) If the modified program normally reads commands interactively
Chris@350 104 when run, you must cause it, when started running for such
Chris@350 105 interactive use in the most ordinary way, to print or display an
Chris@350 106 announcement including an appropriate copyright notice and a
Chris@350 107 notice that there is no warranty (or else, saying that you provide
Chris@350 108 a warranty) and that users may redistribute the program under
Chris@350 109 these conditions, and telling the user how to view a copy of this
Chris@350 110 License. (Exception: if the Program itself is interactive but
Chris@350 111 does not normally print such an announcement, your work based on
Chris@350 112 the Program is not required to print an announcement.)
Chris@350 113
Chris@350 114 These requirements apply to the modified work as a whole. If
Chris@350 115 identifiable sections of that work are not derived from the Program,
Chris@350 116 and can be reasonably considered independent and separate works in
Chris@350 117 themselves, then this License, and its terms, do not apply to those
Chris@350 118 sections when you distribute them as separate works. But when you
Chris@350 119 distribute the same sections as part of a whole which is a work based
Chris@350 120 on the Program, the distribution of the whole must be on the terms of
Chris@350 121 this License, whose permissions for other licensees extend to the
Chris@350 122 entire whole, and thus to each and every part regardless of who wrote it.
Chris@350 123
Chris@350 124 Thus, it is not the intent of this section to claim rights or contest
Chris@350 125 your rights to work written entirely by you; rather, the intent is to
Chris@350 126 exercise the right to control the distribution of derivative or
Chris@350 127 collective works based on the Program.
Chris@350 128
Chris@350 129 In addition, mere aggregation of another work not based on the Program
Chris@350 130 with the Program (or with a work based on the Program) on a volume of
Chris@350 131 a storage or distribution medium does not bring the other work under
Chris@350 132 the scope of this License.
Chris@350 133
Chris@350 134 3. You may copy and distribute the Program (or a work based on it,
Chris@350 135 under Section 2) in object code or executable form under the terms of
Chris@350 136 Sections 1 and 2 above provided that you also do one of the following:
Chris@350 137
Chris@350 138 a) Accompany it with the complete corresponding machine-readable
Chris@350 139 source code, which must be distributed under the terms of Sections
Chris@350 140 1 and 2 above on a medium customarily used for software interchange; or,
Chris@350 141
Chris@350 142 b) Accompany it with a written offer, valid for at least three
Chris@350 143 years, to give any third party, for a charge no more than your
Chris@350 144 cost of physically performing source distribution, a complete
Chris@350 145 machine-readable copy of the corresponding source code, to be
Chris@350 146 distributed under the terms of Sections 1 and 2 above on a medium
Chris@350 147 customarily used for software interchange; or,
Chris@350 148
Chris@350 149 c) Accompany it with the information you received as to the offer
Chris@350 150 to distribute corresponding source code. (This alternative is
Chris@350 151 allowed only for noncommercial distribution and only if you
Chris@350 152 received the program in object code or executable form with such
Chris@350 153 an offer, in accord with Subsection b above.)
Chris@350 154
Chris@350 155 The source code for a work means the preferred form of the work for
Chris@350 156 making modifications to it. For an executable work, complete source
Chris@350 157 code means all the source code for all modules it contains, plus any
Chris@350 158 associated interface definition files, plus the scripts used to
Chris@350 159 control compilation and installation of the executable. However, as a
Chris@350 160 special exception, the source code distributed need not include
Chris@350 161 anything that is normally distributed (in either source or binary
Chris@350 162 form) with the major components (compiler, kernel, and so on) of the
Chris@350 163 operating system on which the executable runs, unless that component
Chris@350 164 itself accompanies the executable.
Chris@350 165
Chris@350 166 If distribution of executable or object code is made by offering
Chris@350 167 access to copy from a designated place, then offering equivalent
Chris@350 168 access to copy the source code from the same place counts as
Chris@350 169 distribution of the source code, even though third parties are not
Chris@350 170 compelled to copy the source along with the object code.
Chris@350 171
Chris@350 172 4. You may not copy, modify, sublicense, or distribute the Program
Chris@350 173 except as expressly provided under this License. Any attempt
Chris@350 174 otherwise to copy, modify, sublicense or distribute the Program is
Chris@350 175 void, and will automatically terminate your rights under this License.
Chris@350 176 However, parties who have received copies, or rights, from you under
Chris@350 177 this License will not have their licenses terminated so long as such
Chris@350 178 parties remain in full compliance.
Chris@350 179
Chris@350 180 5. You are not required to accept this License, since you have not
Chris@350 181 signed it. However, nothing else grants you permission to modify or
Chris@350 182 distribute the Program or its derivative works. These actions are
Chris@350 183 prohibited by law if you do not accept this License. Therefore, by
Chris@350 184 modifying or distributing the Program (or any work based on the
Chris@350 185 Program), you indicate your acceptance of this License to do so, and
Chris@350 186 all its terms and conditions for copying, distributing or modifying
Chris@350 187 the Program or works based on it.
Chris@350 188
Chris@350 189 6. Each time you redistribute the Program (or any work based on the
Chris@350 190 Program), the recipient automatically receives a license from the
Chris@350 191 original licensor to copy, distribute or modify the Program subject to
Chris@350 192 these terms and conditions. You may not impose any further
Chris@350 193 restrictions on the recipients' exercise of the rights granted herein.
Chris@350 194 You are not responsible for enforcing compliance by third parties to
Chris@350 195 this License.
Chris@350 196
Chris@350 197 7. If, as a consequence of a court judgment or allegation of patent
Chris@350 198 infringement or for any other reason (not limited to patent issues),
Chris@350 199 conditions are imposed on you (whether by court order, agreement or
Chris@350 200 otherwise) that contradict the conditions of this License, they do not
Chris@350 201 excuse you from the conditions of this License. If you cannot
Chris@350 202 distribute so as to satisfy simultaneously your obligations under this
Chris@350 203 License and any other pertinent obligations, then as a consequence you
Chris@350 204 may not distribute the Program at all. For example, if a patent
Chris@350 205 license would not permit royalty-free redistribution of the Program by
Chris@350 206 all those who receive copies directly or indirectly through you, then
Chris@350 207 the only way you could satisfy both it and this License would be to
Chris@350 208 refrain entirely from distribution of the Program.
Chris@350 209
Chris@350 210 If any portion of this section is held invalid or unenforceable under
Chris@350 211 any particular circumstance, the balance of the section is intended to
Chris@350 212 apply and the section as a whole is intended to apply in other
Chris@350 213 circumstances.
Chris@350 214
Chris@350 215 It is not the purpose of this section to induce you to infringe any
Chris@350 216 patents or other property right claims or to contest validity of any
Chris@350 217 such claims; this section has the sole purpose of protecting the
Chris@350 218 integrity of the free software distribution system, which is
Chris@350 219 implemented by public license practices. Many people have made
Chris@350 220 generous contributions to the wide range of software distributed
Chris@350 221 through that system in reliance on consistent application of that
Chris@350 222 system; it is up to the author/donor to decide if he or she is willing
Chris@350 223 to distribute software through any other system and a licensee cannot
Chris@350 224 impose that choice.
Chris@350 225
Chris@350 226 This section is intended to make thoroughly clear what is believed to
Chris@350 227 be a consequence of the rest of this License.
Chris@350 228
Chris@350 229 8. If the distribution and/or use of the Program is restricted in
Chris@350 230 certain countries either by patents or by copyrighted interfaces, the
Chris@350 231 original copyright holder who places the Program under this License
Chris@350 232 may add an explicit geographical distribution limitation excluding
Chris@350 233 those countries, so that distribution is permitted only in or among
Chris@350 234 countries not thus excluded. In such case, this License incorporates
Chris@350 235 the limitation as if written in the body of this License.
Chris@350 236
Chris@350 237 9. The Free Software Foundation may publish revised and/or new versions
Chris@350 238 of the General Public License from time to time. Such new versions will
Chris@350 239 be similar in spirit to the present version, but may differ in detail to
Chris@350 240 address new problems or concerns.
Chris@350 241
Chris@350 242 Each version is given a distinguishing version number. If the Program
Chris@350 243 specifies a version number of this License which applies to it and "any
Chris@350 244 later version", you have the option of following the terms and conditions
Chris@350 245 either of that version or of any later version published by the Free
Chris@350 246 Software Foundation. If the Program does not specify a version number of
Chris@350 247 this License, you may choose any version ever published by the Free Software
Chris@350 248 Foundation.
Chris@350 249
Chris@350 250 10. If you wish to incorporate parts of the Program into other free
Chris@350 251 programs whose distribution conditions are different, write to the author
Chris@350 252 to ask for permission. For software which is copyrighted by the Free
Chris@350 253 Software Foundation, write to the Free Software Foundation; we sometimes
Chris@350 254 make exceptions for this. Our decision will be guided by the two goals
Chris@350 255 of preserving the free status of all derivatives of our free software and
Chris@350 256 of promoting the sharing and reuse of software generally.
Chris@350 257
Chris@350 258 NO WARRANTY
Chris@350 259
Chris@350 260 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
Chris@350 261 FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
Chris@350 262 OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
Chris@350 263 PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
Chris@350 264 OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
Chris@350 265 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
Chris@350 266 TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
Chris@350 267 PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
Chris@350 268 REPAIR OR CORRECTION.
Chris@350 269
Chris@350 270 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
Chris@350 271 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
Chris@350 272 REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
Chris@350 273 INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
Chris@350 274 OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
Chris@350 275 TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
Chris@350 276 YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
Chris@350 277 PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
Chris@350 278 POSSIBILITY OF SUCH DAMAGES.
Chris@350 279
Chris@350 280 END OF TERMS AND CONDITIONS