| 1 | GNU GENERAL PUBLIC LICENSE\r |
| 2 | Version 2, June 1991\r |
| 3 | \r |
| 4 | Copyright (C) 1989, 1991 Free Software Foundation, Inc.,\r |
| 5 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\r |
| 6 | Everyone is permitted to copy and distribute verbatim copies\r |
| 7 | of this license document, but changing it is not allowed.\r |
| 8 | \r |
| 9 | Preamble\r |
| 10 | \r |
| 11 | The licenses for most software are designed to take away your\r |
| 12 | freedom to share and change it. By contrast, the GNU General Public\r |
| 13 | License is intended to guarantee your freedom to share and change free\r |
| 14 | software--to make sure the software is free for all its users. This\r |
| 15 | General Public License applies to most of the Free Software\r |
| 16 | Foundation's software and to any other program whose authors commit to\r |
| 17 | using it. (Some other Free Software Foundation software is covered by\r |
| 18 | the GNU Lesser General Public License instead.) You can apply it to\r |
| 19 | your programs, too.\r |
| 20 | \r |
| 21 | When we speak of free software, we are referring to freedom, not\r |
| 22 | price. Our General Public Licenses are designed to make sure that you\r |
| 23 | have the freedom to distribute copies of free software (and charge for\r |
| 24 | this service if you wish), that you receive source code or can get it\r |
| 25 | if you want it, that you can change the software or use pieces of it\r |
| 26 | in new free programs; and that you know you can do these things.\r |
| 27 | \r |
| 28 | To protect your rights, we need to make restrictions that forbid\r |
| 29 | anyone to deny you these rights or to ask you to surrender the rights.\r |
| 30 | These restrictions translate to certain responsibilities for you if you\r |
| 31 | distribute copies of the software, or if you modify it.\r |
| 32 | \r |
| 33 | For example, if you distribute copies of such a program, whether\r |
| 34 | gratis or for a fee, you must give the recipients all the rights that\r |
| 35 | you have. You must make sure that they, too, receive or can get the\r |
| 36 | source code. And you must show them these terms so they know their\r |
| 37 | rights.\r |
| 38 | \r |
| 39 | We protect your rights with two steps: (1) copyright the software, and\r |
| 40 | (2) offer you this license which gives you legal permission to copy,\r |
| 41 | distribute and/or modify the software.\r |
| 42 | \r |
| 43 | Also, for each author's protection and ours, we want to make certain\r |
| 44 | that everyone understands that there is no warranty for this free\r |
| 45 | software. If the software is modified by someone else and passed on, we\r |
| 46 | want its recipients to know that what they have is not the original, so\r |
| 47 | that any problems introduced by others will not reflect on the original\r |
| 48 | authors' reputations.\r |
| 49 | \r |
| 50 | Finally, any free program is threatened constantly by software\r |
| 51 | patents. We wish to avoid the danger that redistributors of a free\r |
| 52 | program will individually obtain patent licenses, in effect making the\r |
| 53 | program proprietary. To prevent this, we have made it clear that any\r |
| 54 | patent must be licensed for everyone's free use or not licensed at all.\r |
| 55 | \r |
| 56 | The precise terms and conditions for copying, distribution and\r |
| 57 | modification follow.\r |
| 58 | \r |
| 59 | GNU GENERAL PUBLIC LICENSE\r |
| 60 | TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION\r |
| 61 | \r |
| 62 | 0. This License applies to any program or other work which contains\r |
| 63 | a notice placed by the copyright holder saying it may be distributed\r |
| 64 | under the terms of this General Public License. The "Program", below,\r |
| 65 | refers to any such program or work, and a "work based on the Program"\r |
| 66 | means either the Program or any derivative work under copyright law:\r |
| 67 | that is to say, a work containing the Program or a portion of it,\r |
| 68 | either verbatim or with modifications and/or translated into another\r |
| 69 | language. (Hereinafter, translation is included without limitation in\r |
| 70 | the term "modification".) Each licensee is addressed as "you".\r |
| 71 | \r |
| 72 | Activities other than copying, distribution and modification are not\r |
| 73 | covered by this License; they are outside its scope. The act of\r |
| 74 | running the Program is not restricted, and the output from the Program\r |
| 75 | is covered only if its contents constitute a work based on the\r |
| 76 | Program (independent of having been made by running the Program).\r |
| 77 | Whether that is true depends on what the Program does.\r |
| 78 | \r |
| 79 | 1. You may copy and distribute verbatim copies of the Program's\r |
| 80 | source code as you receive it, in any medium, provided that you\r |
| 81 | conspicuously and appropriately publish on each copy an appropriate\r |
| 82 | copyright notice and disclaimer of warranty; keep intact all the\r |
| 83 | notices that refer to this License and to the absence of any warranty;\r |
| 84 | and give any other recipients of the Program a copy of this License\r |
| 85 | along with the Program.\r |
| 86 | \r |
| 87 | You may charge a fee for the physical act of transferring a copy, and\r |
| 88 | you may at your option offer warranty protection in exchange for a fee.\r |
| 89 | \r |
| 90 | 2. You may modify your copy or copies of the Program or any portion\r |
| 91 | of it, thus forming a work based on the Program, and copy and\r |
| 92 | distribute such modifications or work under the terms of Section 1\r |
| 93 | above, provided that you also meet all of these conditions:\r |
| 94 | \r |
| 95 | a) You must cause the modified files to carry prominent notices\r |
| 96 | stating that you changed the files and the date of any change.\r |
| 97 | \r |
| 98 | b) You must cause any work that you distribute or publish, that in\r |
| 99 | whole or in part contains or is derived from the Program or any\r |
| 100 | part thereof, to be licensed as a whole at no charge to all third\r |
| 101 | parties under the terms of this License.\r |
| 102 | \r |
| 103 | c) If the modified program normally reads commands interactively\r |
| 104 | when run, you must cause it, when started running for such\r |
| 105 | interactive use in the most ordinary way, to print or display an\r |
| 106 | announcement including an appropriate copyright notice and a\r |
| 107 | notice that there is no warranty (or else, saying that you provide\r |
| 108 | a warranty) and that users may redistribute the program under\r |
| 109 | these conditions, and telling the user how to view a copy of this\r |
| 110 | License. (Exception: if the Program itself is interactive but\r |
| 111 | does not normally print such an announcement, your work based on\r |
| 112 | the Program is not required to print an announcement.)\r |
| 113 | \r |
| 114 | These requirements apply to the modified work as a whole. If\r |
| 115 | identifiable sections of that work are not derived from the Program,\r |
| 116 | and can be reasonably considered independent and separate works in\r |
| 117 | themselves, then this License, and its terms, do not apply to those\r |
| 118 | sections when you distribute them as separate works. But when you\r |
| 119 | distribute the same sections as part of a whole which is a work based\r |
| 120 | on the Program, the distribution of the whole must be on the terms of\r |
| 121 | this License, whose permissions for other licensees extend to the\r |
| 122 | entire whole, and thus to each and every part regardless of who wrote it.\r |
| 123 | \r |
| 124 | Thus, it is not the intent of this section to claim rights or contest\r |
| 125 | your rights to work written entirely by you; rather, the intent is to\r |
| 126 | exercise the right to control the distribution of derivative or\r |
| 127 | collective works based on the Program.\r |
| 128 | \r |
| 129 | In addition, mere aggregation of another work not based on the Program\r |
| 130 | with the Program (or with a work based on the Program) on a volume of\r |
| 131 | a storage or distribution medium does not bring the other work under\r |
| 132 | the scope of this License.\r |
| 133 | \r |
| 134 | 3. You may copy and distribute the Program (or a work based on it,\r |
| 135 | under Section 2) in object code or executable form under the terms of\r |
| 136 | Sections 1 and 2 above provided that you also do one of the following:\r |
| 137 | \r |
| 138 | a) Accompany it with the complete corresponding machine-readable\r |
| 139 | source code, which must be distributed under the terms of Sections\r |
| 140 | 1 and 2 above on a medium customarily used for software interchange; or,\r |
| 141 | \r |
| 142 | b) Accompany it with a written offer, valid for at least three\r |
| 143 | years, to give any third party, for a charge no more than your\r |
| 144 | cost of physically performing source distribution, a complete\r |
| 145 | machine-readable copy of the corresponding source code, to be\r |
| 146 | distributed under the terms of Sections 1 and 2 above on a medium\r |
| 147 | customarily used for software interchange; or,\r |
| 148 | \r |
| 149 | c) Accompany it with the information you received as to the offer\r |
| 150 | to distribute corresponding source code. (This alternative is\r |
| 151 | allowed only for noncommercial distribution and only if you\r |
| 152 | received the program in object code or executable form with such\r |
| 153 | an offer, in accord with Subsection b above.)\r |
| 154 | \r |
| 155 | The source code for a work means the preferred form of the work for\r |
| 156 | making modifications to it. For an executable work, complete source\r |
| 157 | code means all the source code for all modules it contains, plus any\r |
| 158 | associated interface definition files, plus the scripts used to\r |
| 159 | control compilation and installation of the executable. However, as a\r |
| 160 | special exception, the source code distributed need not include\r |
| 161 | anything that is normally distributed (in either source or binary\r |
| 162 | form) with the major components (compiler, kernel, and so on) of the\r |
| 163 | operating system on which the executable runs, unless that component\r |
| 164 | itself accompanies the executable.\r |
| 165 | \r |
| 166 | If distribution of executable or object code is made by offering\r |
| 167 | access to copy from a designated place, then offering equivalent\r |
| 168 | access to copy the source code from the same place counts as\r |
| 169 | distribution of the source code, even though third parties are not\r |
| 170 | compelled to copy the source along with the object code.\r |
| 171 | \r |
| 172 | 4. You may not copy, modify, sublicense, or distribute the Program\r |
| 173 | except as expressly provided under this License. Any attempt\r |
| 174 | otherwise to copy, modify, sublicense or distribute the Program is\r |
| 175 | void, and will automatically terminate your rights under this License.\r |
| 176 | However, parties who have received copies, or rights, from you under\r |
| 177 | this License will not have their licenses terminated so long as such\r |
| 178 | parties remain in full compliance.\r |
| 179 | \r |
| 180 | 5. You are not required to accept this License, since you have not\r |
| 181 | signed it. However, nothing else grants you permission to modify or\r |
| 182 | distribute the Program or its derivative works. These actions are\r |
| 183 | prohibited by law if you do not accept this License. Therefore, by\r |
| 184 | modifying or distributing the Program (or any work based on the\r |
| 185 | Program), you indicate your acceptance of this License to do so, and\r |
| 186 | all its terms and conditions for copying, distributing or modifying\r |
| 187 | the Program or works based on it.\r |
| 188 | \r |
| 189 | 6. Each time you redistribute the Program (or any work based on the\r |
| 190 | Program), the recipient automatically receives a license from the\r |
| 191 | original licensor to copy, distribute or modify the Program subject to\r |
| 192 | these terms and conditions. You may not impose any further\r |
| 193 | restrictions on the recipients' exercise of the rights granted herein.\r |
| 194 | You are not responsible for enforcing compliance by third parties to\r |
| 195 | this License.\r |
| 196 | \r |
| 197 | 7. If, as a consequence of a court judgment or allegation of patent\r |
| 198 | infringement or for any other reason (not limited to patent issues),\r |
| 199 | conditions are imposed on you (whether by court order, agreement or\r |
| 200 | otherwise) that contradict the conditions of this License, they do not\r |
| 201 | excuse you from the conditions of this License. If you cannot\r |
| 202 | distribute so as to satisfy simultaneously your obligations under this\r |
| 203 | License and any other pertinent obligations, then as a consequence you\r |
| 204 | may not distribute the Program at all. For example, if a patent\r |
| 205 | license would not permit royalty-free redistribution of the Program by\r |
| 206 | all those who receive copies directly or indirectly through you, then\r |
| 207 | the only way you could satisfy both it and this License would be to\r |
| 208 | refrain entirely from distribution of the Program.\r |
| 209 | \r |
| 210 | If any portion of this section is held invalid or unenforceable under\r |
| 211 | any particular circumstance, the balance of the section is intended to\r |
| 212 | apply and the section as a whole is intended to apply in other\r |
| 213 | circumstances.\r |
| 214 | \r |
| 215 | It is not the purpose of this section to induce you to infringe any\r |
| 216 | patents or other property right claims or to contest validity of any\r |
| 217 | such claims; this section has the sole purpose of protecting the\r |
| 218 | integrity of the free software distribution system, which is\r |
| 219 | implemented by public license practices. Many people have made\r |
| 220 | generous contributions to the wide range of software distributed\r |
| 221 | through that system in reliance on consistent application of that\r |
| 222 | system; it is up to the author/donor to decide if he or she is willing\r |
| 223 | to distribute software through any other system and a licensee cannot\r |
| 224 | impose that choice.\r |
| 225 | \r |
| 226 | This section is intended to make thoroughly clear what is believed to\r |
| 227 | be a consequence of the rest of this License.\r |
| 228 | \r |
| 229 | 8. If the distribution and/or use of the Program is restricted in\r |
| 230 | certain countries either by patents or by copyrighted interfaces, the\r |
| 231 | original copyright holder who places the Program under this License\r |
| 232 | may add an explicit geographical distribution limitation excluding\r |
| 233 | those countries, so that distribution is permitted only in or among\r |
| 234 | countries not thus excluded. In such case, this License incorporates\r |
| 235 | the limitation as if written in the body of this License.\r |
| 236 | \r |
| 237 | 9. The Free Software Foundation may publish revised and/or new versions\r |
| 238 | of the General Public License from time to time. Such new versions will\r |
| 239 | be similar in spirit to the present version, but may differ in detail to\r |
| 240 | address new problems or concerns.\r |
| 241 | \r |
| 242 | Each version is given a distinguishing version number. If the Program\r |
| 243 | specifies a version number of this License which applies to it and "any\r |
| 244 | later version", you have the option of following the terms and conditions\r |
| 245 | either of that version or of any later version published by the Free\r |
| 246 | Software Foundation. If the Program does not specify a version number of\r |
| 247 | this License, you may choose any version ever published by the Free Software\r |
| 248 | Foundation.\r |
| 249 | \r |
| 250 | 10. If you wish to incorporate parts of the Program into other free\r |
| 251 | programs whose distribution conditions are different, write to the author\r |
| 252 | to ask for permission. For software which is copyrighted by the Free\r |
| 253 | Software Foundation, write to the Free Software Foundation; we sometimes\r |
| 254 | make exceptions for this. Our decision will be guided by the two goals\r |
| 255 | of preserving the free status of all derivatives of our free software and\r |
| 256 | of promoting the sharing and reuse of software generally.\r |
| 257 | \r |
| 258 | NO WARRANTY\r |
| 259 | \r |
| 260 | 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY\r |
| 261 | FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN\r |
| 262 | OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES\r |
| 263 | PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED\r |
| 264 | OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF\r |
| 265 | MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS\r |
| 266 | TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE\r |
| 267 | PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,\r |
| 268 | REPAIR OR CORRECTION.\r |
| 269 | \r |
| 270 | 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING\r |
| 271 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR\r |
| 272 | REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,\r |
| 273 | INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING\r |
| 274 | OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED\r |
| 275 | TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY\r |
| 276 | YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER\r |
| 277 | PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE\r |
| 278 | POSSIBILITY OF SUCH DAMAGES.\r |
| 279 | \r |
| 280 | END OF TERMS AND CONDITIONS\r |
| 281 | \r |
| 282 | How to Apply These Terms to Your New Programs\r |
| 283 | \r |
| 284 | If you develop a new program, and you want it to be of the greatest\r |
| 285 | possible use to the public, the best way to achieve this is to make it\r |
| 286 | free software which everyone can redistribute and change under these terms.\r |
| 287 | \r |
| 288 | To do so, attach the following notices to the program. It is safest\r |
| 289 | to attach them to the start of each source file to most effectively\r |
| 290 | convey the exclusion of warranty; and each file should have at least\r |
| 291 | the "copyright" line and a pointer to where the full notice is found.\r |
| 292 | \r |
| 293 | <one line to give the program's name and a brief idea of what it does.>\r |
| 294 | Copyright (C) <year> <name of author>\r |
| 295 | \r |
| 296 | This program is free software; you can redistribute it and/or modify\r |
| 297 | it under the terms of the GNU General Public License as published by\r |
| 298 | the Free Software Foundation; either version 2 of the License, or\r |
| 299 | (at your option) any later version.\r |
| 300 | \r |
| 301 | This program is distributed in the hope that it will be useful,\r |
| 302 | but WITHOUT ANY WARRANTY; without even the implied warranty of\r |
| 303 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r |
| 304 | GNU General Public License for more details.\r |
| 305 | \r |
| 306 | You should have received a copy of the GNU General Public License along\r |
| 307 | with this program; if not, write to the Free Software Foundation, Inc.,\r |
| 308 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.\r |
| 309 | \r |
| 310 | Also add information on how to contact you by electronic and paper mail.\r |
| 311 | \r |
| 312 | If the program is interactive, make it output a short notice like this\r |
| 313 | when it starts in an interactive mode:\r |
| 314 | \r |
| 315 | Gnomovision version 69, Copyright (C) year name of author\r |
| 316 | Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.\r |
| 317 | This is free software, and you are welcome to redistribute it\r |
| 318 | under certain conditions; type `show c' for details.\r |
| 319 | \r |
| 320 | The hypothetical commands `show w' and `show c' should show the appropriate\r |
| 321 | parts of the General Public License. Of course, the commands you use may\r |
| 322 | be called something other than `show w' and `show c'; they could even be\r |
| 323 | mouse-clicks or menu items--whatever suits your program.\r |
| 324 | \r |
| 325 | You should also get your employer (if you work as a programmer) or your\r |
| 326 | school, if any, to sign a "copyright disclaimer" for the program, if\r |
| 327 | necessary. Here is a sample; alter the names:\r |
| 328 | \r |
| 329 | Yoyodyne, Inc., hereby disclaims all copyright interest in the program\r |
| 330 | `Gnomovision' (which makes passes at compilers) written by James Hacker.\r |
| 331 | \r |
| 332 | <signature of Ty Coon>, 1 April 1989\r |
| 333 | Ty Coon, President of Vice\r |
| 334 | \r |
| 335 | This General Public License does not permit incorporating your program into\r |
| 336 | proprietary programs. If your program is a subroutine library, you may\r |
| 337 | consider it more useful to permit linking proprietary applications with the\r |
| 338 | library. If this is what you want to do, use the GNU Lesser General\r |
| 339 | Public License instead of this License. |