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1+ GNU GENERAL PUBLIC LICENSE
2+ Version 2, June 1991
3+
4+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
5+ 51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA
6+ Everyone is permitted to copy and distribute verbatim copies
7+ of this license document, but changing it is not allowed.
8+
9+ Preamble
10+
11+ The licenses for most software are designed to take away your
12+freedom to share and change it. By contrast, the GNU General Public
13+License is intended to guarantee your freedom to share and change free
14+software--to make sure the software is free for all its users. This
15+General Public License applies to most of the Free Software
16+Foundation's software and to any other program whose authors commit to
17+using it. (Some other Free Software Foundation software is covered by
18+the GNU Library General Public License instead.) You can apply it to
19+your programs, too.
20+
21+ When we speak of free software, we are referring to freedom, not
22+price. Our General Public Licenses are designed to make sure that you
23+have the freedom to distribute copies of free software (and charge for
24+this service if you wish), that you receive source code or can get it
25+if you want it, that you can change the software or use pieces of it
26+in new free programs; and that you know you can do these things.
27+
28+ To protect your rights, we need to make restrictions that forbid
29+anyone to deny you these rights or to ask you to surrender the rights.
30+These restrictions translate to certain responsibilities for you if you
31+distribute copies of the software, or if you modify it.
32+
33+ For example, if you distribute copies of such a program, whether
34+gratis or for a fee, you must give the recipients all the rights that
35+you have. You must make sure that they, too, receive or can get the
36+source code. And you must show them these terms so they know their
37+rights.
38+
39+ We protect your rights with two steps: (1) copyright the software, and
40+(2) offer you this license which gives you legal permission to copy,
41+distribute and/or modify the software.
42+
43+ Also, for each author's protection and ours, we want to make certain
44+that everyone understands that there is no warranty for this free
45+software. If the software is modified by someone else and passed on, we
46+want its recipients to know that what they have is not the original, so
47+that any problems introduced by others will not reflect on the original
48+authors' reputations.
49+
50+ Finally, any free program is threatened constantly by software
51+patents. We wish to avoid the danger that redistributors of a free
52+program will individually obtain patent licenses, in effect making the
53+program proprietary. To prevent this, we have made it clear that any
54+patent must be licensed for everyone's free use or not licensed at all.
55+
56+ The precise terms and conditions for copying, distribution and
57+modification follow.
58+
59+ GNU GENERAL PUBLIC LICENSE
60+ TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
61+
62+ 0. This License applies to any program or other work which contains
63+a notice placed by the copyright holder saying it may be distributed
64+under the terms of this General Public License. The "Program", below,
65+refers to any such program or work, and a "work based on the Program"
66+means either the Program or any derivative work under copyright law:
67+that is to say, a work containing the Program or a portion of it,
68+either verbatim or with modifications and/or translated into another
69+language. (Hereinafter, translation is included without limitation in
70+the term "modification".) Each licensee is addressed as "you".
71+
72+Activities other than copying, distribution and modification are not
73+covered by this License; they are outside its scope. The act of
74+running the Program is not restricted, and the output from the Program
75+is covered only if its contents constitute a work based on the
76+Program (independent of having been made by running the Program).
77+Whether that is true depends on what the Program does.
78+
79+ 1. You may copy and distribute verbatim copies of the Program's
80+source code as you receive it, in any medium, provided that you
81+conspicuously and appropriately publish on each copy an appropriate
82+copyright notice and disclaimer of warranty; keep intact all the
83+notices that refer to this License and to the absence of any warranty;
84+and give any other recipients of the Program a copy of this License
85+along with the Program.
86+
87+You may charge a fee for the physical act of transferring a copy, and
88+you may at your option offer warranty protection in exchange for a fee.
89+
90+ 2. You may modify your copy or copies of the Program or any portion
91+of it, thus forming a work based on the Program, and copy and
92+distribute such modifications or work under the terms of Section 1
93+above, provided that you also meet all of these conditions:
94+
95+ a) You must cause the modified files to carry prominent notices
96+ stating that you changed the files and the date of any change.
97+
98+ b) You must cause any work that you distribute or publish, that in
99+ whole or in part contains or is derived from the Program or any
100+ part thereof, to be licensed as a whole at no charge to all third
101+ parties under the terms of this License.
102+
103+ c) If the modified program normally reads commands interactively
104+ when run, you must cause it, when started running for such
105+ interactive use in the most ordinary way, to print or display an
106+ announcement including an appropriate copyright notice and a
107+ notice that there is no warranty (or else, saying that you provide
108+ a warranty) and that users may redistribute the program under
109+ these conditions, and telling the user how to view a copy of this
110+ License. (Exception: if the Program itself is interactive but
111+ does not normally print such an announcement, your work based on
112+ the Program is not required to print an announcement.)
113+
114+These requirements apply to the modified work as a whole. If
115+identifiable sections of that work are not derived from the Program,
116+and can be reasonably considered independent and separate works in
117+themselves, then this License, and its terms, do not apply to those
118+sections when you distribute them as separate works. But when you
119+distribute the same sections as part of a whole which is a work based
120+on the Program, the distribution of the whole must be on the terms of
121+this License, whose permissions for other licensees extend to the
122+entire whole, and thus to each and every part regardless of who wrote it.
123+
124+Thus, it is not the intent of this section to claim rights or contest
125+your rights to work written entirely by you; rather, the intent is to
126+exercise the right to control the distribution of derivative or
127+collective works based on the Program.
128+
129+In addition, mere aggregation of another work not based on the Program
130+with the Program (or with a work based on the Program) on a volume of
131+a storage or distribution medium does not bring the other work under
132+the scope of this License.
133+
134+ 3. You may copy and distribute the Program (or a work based on it,
135+under Section 2) in object code or executable form under the terms of
136+Sections 1 and 2 above provided that you also do one of the following:
137+
138+ a) Accompany it with the complete corresponding machine-readable
139+ source code, which must be distributed under the terms of Sections
140+ 1 and 2 above on a medium customarily used for software interchange; or,
141+
142+ b) Accompany it with a written offer, valid for at least three
143+ years, to give any third party, for a charge no more than your
144+ cost of physically performing source distribution, a complete
145+ machine-readable copy of the corresponding source code, to be
146+ distributed under the terms of Sections 1 and 2 above on a medium
147+ customarily used for software interchange; or,
148+
149+ c) Accompany it with the information you received as to the offer
150+ to distribute corresponding source code. (This alternative is
151+ allowed only for noncommercial distribution and only if you
152+ received the program in object code or executable form with such
153+ an offer, in accord with Subsection b above.)
154+
155+The source code for a work means the preferred form of the work for
156+making modifications to it. For an executable work, complete source
157+code means all the source code for all modules it contains, plus any
158+associated interface definition files, plus the scripts used to
159+control compilation and installation of the executable. However, as a
160+special exception, the source code distributed need not include
161+anything that is normally distributed (in either source or binary
162+form) with the major components (compiler, kernel, and so on) of the
163+operating system on which the executable runs, unless that component
164+itself accompanies the executable.
165+
166+If distribution of executable or object code is made by offering
167+access to copy from a designated place, then offering equivalent
168+access to copy the source code from the same place counts as
169+distribution of the source code, even though third parties are not
170+compelled to copy the source along with the object code.
171+
172+ 4. You may not copy, modify, sublicense, or distribute the Program
173+except as expressly provided under this License. Any attempt
174+otherwise to copy, modify, sublicense or distribute the Program is
175+void, and will automatically terminate your rights under this License.
176+However, parties who have received copies, or rights, from you under
177+this License will not have their licenses terminated so long as such
178+parties remain in full compliance.
179+
180+ 5. You are not required to accept this License, since you have not
181+signed it. However, nothing else grants you permission to modify or
182+distribute the Program or its derivative works. These actions are
183+prohibited by law if you do not accept this License. Therefore, by
184+modifying or distributing the Program (or any work based on the
185+Program), you indicate your acceptance of this License to do so, and
186+all its terms and conditions for copying, distributing or modifying
187+the Program or works based on it.
188+
189+ 6. Each time you redistribute the Program (or any work based on the
190+Program), the recipient automatically receives a license from the
191+original licensor to copy, distribute or modify the Program subject to
192+these terms and conditions. You may not impose any further
193+restrictions on the recipients' exercise of the rights granted herein.
194+You are not responsible for enforcing compliance by third parties to
195+this License.
196+
197+ 7. If, as a consequence of a court judgment or allegation of patent
198+infringement or for any other reason (not limited to patent issues),
199+conditions are imposed on you (whether by court order, agreement or
200+otherwise) that contradict the conditions of this License, they do not
201+excuse you from the conditions of this License. If you cannot
202+distribute so as to satisfy simultaneously your obligations under this
203+License and any other pertinent obligations, then as a consequence you
204+may not distribute the Program at all. For example, if a patent
205+license would not permit royalty-free redistribution of the Program by
206+all those who receive copies directly or indirectly through you, then
207+the only way you could satisfy both it and this License would be to
208+refrain entirely from distribution of the Program.
209+
210+If any portion of this section is held invalid or unenforceable under
211+any particular circumstance, the balance of the section is intended to
212+apply and the section as a whole is intended to apply in other
213+circumstances.
214+
215+It is not the purpose of this section to induce you to infringe any
216+patents or other property right claims or to contest validity of any
217+such claims; this section has the sole purpose of protecting the
218+integrity of the free software distribution system, which is
219+implemented by public license practices. Many people have made
220+generous contributions to the wide range of software distributed
221+through that system in reliance on consistent application of that
222+system; it is up to the author/donor to decide if he or she is willing
223+to distribute software through any other system and a licensee cannot
224+impose that choice.
225+
226+This section is intended to make thoroughly clear what is believed to
227+be a consequence of the rest of this License.
228+
229+ 8. If the distribution and/or use of the Program is restricted in
230+certain countries either by patents or by copyrighted interfaces, the
231+original copyright holder who places the Program under this License
232+may add an explicit geographical distribution limitation excluding
233+those countries, so that distribution is permitted only in or among
234+countries not thus excluded. In such case, this License incorporates
235+the limitation as if written in the body of this License.
236+
237+ 9. The Free Software Foundation may publish revised and/or new versions
238+of the General Public License from time to time. Such new versions will
239+be similar in spirit to the present version, but may differ in detail to
240+address new problems or concerns.
241+
242+Each version is given a distinguishing version number. If the Program
243+specifies a version number of this License which applies to it and "any
244+later version", you have the option of following the terms and conditions
245+either of that version or of any later version published by the Free
246+Software Foundation. If the Program does not specify a version number of
247+this License, you may choose any version ever published by the Free Software
248+Foundation.
249+
250+ 10. If you wish to incorporate parts of the Program into other free
251+programs whose distribution conditions are different, write to the author
252+to ask for permission. For software which is copyrighted by the Free
253+Software Foundation, write to the Free Software Foundation; we sometimes
254+make exceptions for this. Our decision will be guided by the two goals
255+of preserving the free status of all derivatives of our free software and
256+of promoting the sharing and reuse of software generally.
257+
258+ NO WARRANTY
259+
260+ 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
261+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
262+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
263+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
264+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
265+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
266+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
267+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
268+REPAIR OR CORRECTION.
269+
270+ 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
271+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
272+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
273+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
274+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
275+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
276+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
277+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
278+POSSIBILITY OF SUCH DAMAGES.
279+
280+ END OF TERMS AND CONDITIONS
281+
282+ How to Apply These Terms to Your New Programs
283+
284+ If you develop a new program, and you want it to be of the greatest
285+possible use to the public, the best way to achieve this is to make it
286+free software which everyone can redistribute and change under these terms.
287+
288+ To do so, attach the following notices to the program. It is safest
289+to attach them to the start of each source file to most effectively
290+convey the exclusion of warranty; and each file should have at least
291+the "copyright" line and a pointer to where the full notice is found.
292+
293+ <one line to give the program's name and a brief idea of what it does.>
294+ Copyright (C) <year> <name of author>
295+
296+ This program is free software; you can redistribute it and/or modify
297+ it under the terms of the GNU General Public License as published by
298+ the Free Software Foundation; either version 2 of the License, or
299+ (at your option) any later version.
300+
301+ This program is distributed in the hope that it will be useful,
302+ but WITHOUT ANY WARRANTY; without even the implied warranty of
303+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
304+ GNU General Public License for more details.
305+
306+ You should have received a copy of the GNU General Public License
307+ along with this program; if not, write to the Free Software
308+ Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA
309+
310+
311+Also add information on how to contact you by electronic and paper mail.
312+
313+If the program is interactive, make it output a short notice like this
314+when it starts in an interactive mode:
315+
316+ Gnomovision version 69, Copyright (C) year name of author
317+ Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
318+ This is free software, and you are welcome to redistribute it
319+ under certain conditions; type `show c' for details.
320+
321+The hypothetical commands `show w' and `show c' should show the appropriate
322+parts of the General Public License. Of course, the commands you use may
323+be called something other than `show w' and `show c'; they could even be
324+mouse-clicks or menu items--whatever suits your program.
325+
326+You should also get your employer (if you work as a programmer) or your
327+school, if any, to sign a "copyright disclaimer" for the program, if
328+necessary. Here is a sample; alter the names:
329+
330+ Yoyodyne, Inc., hereby disclaims all copyright interest in the program
331+ `Gnomovision' (which makes passes at compilers) written by James Hacker.
332+
333+ <signature of Ty Coon>, 1 April 1989
334+ Ty Coon, President of Vice
335+
336+This General Public License does not permit incorporating your program into
337+proprietary programs. If your program is a subroutine library, you may
338+consider it more useful to permit linking proprietary applications with the
339+library. If this is what you want to do, use the GNU Library General
340+Public License instead of this License.