1GNU GENERAL PUBLIC LICENSE
2
3   Version 2, June 1991
4Copyright (C) 1989, 1991 Free Software Foundation, Inc.
559 Temple Place - Suite 330, Boston, MA  02111-1307, USA
6
7Everyone is permitted to copy and distribute verbatim copies
8of this license document, but changing it is not allowed.
9
10Preamble
11
12   The licenses for most software are designed to take away your freedom
13   to share and change it. By contrast, the GNU General Public License is
14   intended to guarantee your freedom to share and change free
15   software--to make sure the software is free for all its users. This
16   General Public License applies to most of the Free Software
17   Foundation's software and to any other program whose authors commit to
18   using it. (Some other Free Software Foundation software is covered by
19   the GNU Library General Public License instead.) You can apply it to
20   your programs, too.
21
22   When we speak of free software, we are referring to freedom, not
23   price. Our General Public Licenses are designed to make sure that you
24   have the freedom to distribute copies of free software (and charge for
25   this service if you wish), that you receive source code or can get it
26   if you want it, that you can change the software or use pieces of it
27   in new free programs; and that you know you can do these things.
28
29   To protect your rights, we need to make restrictions that forbid
30   anyone to deny you these rights or to ask you to surrender the rights.
31   These restrictions translate to certain responsibilities for you if
32   you distribute copies of the software, or if you modify it.
33
34   For example, if you distribute copies of such a program, whether
35   gratis or for a fee, you must give the recipients all the rights that
36   you have. You must make sure that they, too, receive or can get the
37   source code. And you must show them these terms so they know their
38   rights.
39
40   We protect your rights with two steps: (1) copyright the software, and
41   (2) offer you this license which gives you legal permission to copy,
42   distribute and/or modify the software.
43
44   Also, for each author's protection and ours, we want to make certain
45   that everyone understands that there is no warranty for this free
46   software. If the software is modified by someone else and passed on,
47   we want its recipients to know that what they have is not the
48   original, so that any problems introduced by others will not reflect
49   on the original authors' reputations.
50
51   Finally, any free program is threatened constantly by software
52   patents. We wish to avoid the danger that redistributors of a free
53   program will individually obtain patent licenses, in effect making the
54   program proprietary. To prevent this, we have made it clear that any
55   patent must be licensed for everyone's free use or not licensed at
56   all.
57
58   The precise terms and conditions for copying, distribution and
59   modification follow.
60
61TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
62
63   0. This License applies to any program or other work which contains a
64   notice placed by the copyright holder saying it may be distributed
65   under the terms of this General Public License. The "Program", below,
66   refers to any such program or work, and a "work based on the Program"
67   means either the Program or any derivative work under copyright law:
68   that is to say, a work containing the Program or a portion of it,
69   either verbatim or with modifications and/or translated into another
70   language. (Hereinafter, translation is included without limitation in
71   the term "modification".) Each licensee is addressed as "you".
72
73   Activities other than copying, distribution and modification are not
74   covered by this License; they are outside its scope. The act of
75   running the Program is not restricted, and the output from the Program
76   is covered only if its contents constitute a work based on the Program
77   (independent of having been made by running the Program). Whether that
78   is true depends on what the Program does.
79
80   1. You may copy and distribute verbatim copies of the Program's source
81   code as you receive it, in any medium, provided that you conspicuously
82   and appropriately publish on each copy an appropriate copyright notice
83   and disclaimer of warranty; keep intact all the notices that refer to
84   this License and to the absence of any warranty; and give any other
85   recipients of the Program a copy of this License along with the
86   Program.
87
88   You may charge a fee for the physical act of transferring a copy, and
89   you may at your option offer warranty protection in exchange for a
90   fee.
91
92   2. You may modify your copy or copies of the Program or any portion of
93   it, thus forming a work based on the Program, and copy and distribute
94   such modifications or work under the terms of Section 1 above,
95   provided that you also meet all of these conditions:
96
97     * a) You must cause the modified files to carry prominent notices
98       stating that you changed the files and the date of any change.
99     * b) You must cause any work that you distribute or publish, that in
100       whole or in part contains or is derived from the Program or any
101       part thereof, to be licensed as a whole at no charge to all third
102       parties under the terms of this License.
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 does
111       not normally print such an announcement, your work based on the
112       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
123   it.
124
125   Thus, it is not the intent of this section to claim rights or contest
126   your rights to work written entirely by you; rather, the intent is to
127   exercise the right to control the distribution of derivative or
128   collective works based on the Program.
129
130   In addition, mere aggregation of another work not based on the Program
131   with the Program (or with a work based on the Program) on a volume of
132   a storage or distribution medium does not bring the other work under
133   the scope of this License.
134
135   3. You may copy and distribute the Program (or a work based on it,
136   under Section 2) in object code or executable form under the terms of
137   Sections 1 and 2 above provided that you also do one of the following:
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
141       interchange; or,
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     * c) Accompany it with the information you received as to the offer
149       to distribute corresponding source code. (This alternative is
150       allowed only for noncommercial distribution and only if you
151       received the program in object code or executable form with such
152       an offer, in accord with Subsection b above.)
153
154   The source code for a work means the preferred form of the work for
155   making modifications to it. For an executable work, complete source
156   code means all the source code for all modules it contains, plus any
157   associated interface definition files, plus the scripts used to
158   control compilation and installation of the executable. However, as a
159   special exception, the source code distributed need not include
160   anything that is normally distributed (in either source or binary
161   form) with the major components (compiler, kernel, and so on) of the
162   operating system on which the executable runs, unless that component
163   itself accompanies the executable.
164
165   If distribution of executable or object code is made by offering
166   access to copy from a designated place, then offering equivalent
167   access to copy the source code from the same place counts as
168   distribution of the source code, even though third parties are not
169   compelled to copy the source along with the object code.
170
171   4. You may not copy, modify, sublicense, or distribute the Program
172   except as expressly provided under this License. Any attempt otherwise
173   to copy, modify, sublicense or distribute the Program is void, and
174   will automatically terminate your rights under this License. However,
175   parties who have received copies, or rights, from you under this
176   License will not have their licenses terminated so long as such
177   parties remain in full compliance.
178
179   5. You are not required to accept this License, since you have not
180   signed it. However, nothing else grants you permission to modify or
181   distribute the Program or its derivative works. These actions are
182   prohibited by law if you do not accept this License. Therefore, by
183   modifying or distributing the Program (or any work based on the
184   Program), you indicate your acceptance of this License to do so, and
185   all its terms and conditions for copying, distributing or modifying
186   the Program or works based on it.
187
188   6. Each time you redistribute the Program (or any work based on the
189   Program), the recipient automatically receives a license from the
190   original licensor to copy, distribute or modify the Program subject to
191   these terms and conditions. You may not impose any further
192   restrictions on the recipients' exercise of the rights granted herein.
193   You are not responsible for enforcing compliance by third parties to
194   this License.
195
196   7. If, as a consequence of a court judgment or allegation of patent
197   infringement or for any other reason (not limited to patent issues),
198   conditions are imposed on you (whether by court order, agreement or
199   otherwise) that contradict the conditions of this License, they do not
200   excuse you from the conditions of this License. If you cannot
201   distribute so as to satisfy simultaneously your obligations under this
202   License and any other pertinent obligations, then as a consequence you
203   may not distribute the Program at all. For example, if a patent
204   license would not permit royalty-free redistribution of the Program by
205   all those who receive copies directly or indirectly through you, then
206   the only way you could satisfy both it and this License would be to
207   refrain entirely from distribution of the Program.
208
209   If any portion of this section is held invalid or unenforceable under
210   any particular circumstance, the balance of the section is intended to
211   apply and the section as a whole is intended to apply in other
212   circumstances.
213
214   It is not the purpose of this section to induce you to infringe any
215   patents or other property right claims or to contest validity of any
216   such claims; this section has the sole purpose of protecting the
217   integrity of the free software distribution system, which is
218   implemented by public license practices. Many people have made
219   generous contributions to the wide range of software distributed
220   through that system in reliance on consistent application of that
221   system; it is up to the author/donor to decide if he or she is willing
222   to distribute software through any other system and a licensee cannot
223   impose that choice.
224
225   This section is intended to make thoroughly clear what is believed to
226   be a consequence of the rest of this License.
227
228   8. If the distribution and/or use of the Program is restricted in
229   certain countries either by patents or by copyrighted interfaces, the
230   original copyright holder who places the Program under this License
231   may add an explicit geographical distribution limitation excluding
232   those countries, so that distribution is permitted only in or among
233   countries not thus excluded. In such case, this License incorporates
234   the limitation as if written in the body of this License.
235
236   9. The Free Software Foundation may publish revised and/or new
237   versions of the General Public License from time to time. Such new
238   versions will be similar in spirit to the present version, but may
239   differ in detail to address new problems or concerns.
240
241   Each version is given a distinguishing version number. If the Program
242   specifies a version number of this License which applies to it and
243   "any later version", you have the option of following the terms and
244   conditions either of that version or of any later version published by
245   the Free Software Foundation. If the Program does not specify a
246   version number of this License, you may choose any version ever
247   published by the Free Software Foundation.
248
249   10. If you wish to incorporate parts of the Program into other free
250   programs whose distribution conditions are different, write to the
251   author to ask for permission. For software which is copyrighted by the
252   Free Software Foundation, write to the Free Software Foundation; we
253   sometimes make exceptions for this. Our decision will be guided by the
254   two goals of preserving the free status of all derivatives of our free
255   software and of promoting the sharing and reuse of software generally.
256
257   NO WARRANTY
258
259   11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO
260   WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
261   EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
262   OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY
263   KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
264   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
265   PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
266   PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME
267   THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
268
269   12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
270   WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
271   AND/OR REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU
272   FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
273   CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
274   PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
275   RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
276   FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF
277   SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
278   DAMAGES.
279
280END OF TERMS AND CONDITIONS
281
282