1+ GNU GENERAL PUBLIC LICENSE
2+ Version 2, June 1991
3+
4+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
5+ 59 Temple Place, Suite 330, Boston, MA 02111-1307 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+ 1. 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.
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