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1GNU General Public License, version 2,
2with the Classpath Exception
3
4The GNU General Public License (GPL)
5
6Version 2, June 1991
7
8Copyright (C) 1989, 1991 Free Software Foundation, Inc.
959 Temple Place, Suite 330, Boston, MA 02111-1307 USA
10
11Everyone is permitted to copy and distribute verbatim copies of this license
12document, but changing it is not allowed.
13
14Preamble
15
16The licenses for most software are designed to take away your freedom to share
17and change it.  By contrast, the GNU General Public License is intended to
18guarantee your freedom to share and change free software--to make sure the
19software is free for all its users.  This General Public License applies to
20most of the Free Software Foundation's software and to any other program whose
21authors commit to using it.  (Some other Free Software Foundation software is
22covered by the GNU Library General Public License instead.) You can apply it to
23your programs, too.
24
25When we speak of free software, we are referring to freedom, not price.  Our
26General Public Licenses are designed to make sure that you have the freedom to
27distribute copies of free software (and charge for this service if you wish),
28that you receive source code or can get it if you want it, that you can change
29the software or use pieces of it in new free programs; and that you know you
30can do these things.
31
32To protect your rights, we need to make restrictions that forbid anyone to deny
33you these rights or to ask you to surrender the rights.  These restrictions
34translate to certain responsibilities for you if you distribute copies of the
35software, or if you modify it.
36
37For example, if you distribute copies of such a program, whether gratis or for
38a fee, you must give the recipients all the rights that you have.  You must
39make sure that they, too, receive or can get the source code.  And you must
40show them these terms so they know their rights.
41
42We protect your rights with two steps: (1) copyright the software, and (2)
43offer you this license which gives you legal permission to copy, distribute
44and/or modify the software.
45
46Also, for each author's protection and ours, we want to make certain that
47everyone understands that there is no warranty for this free software.  If the
48software is modified by someone else and passed on, we want its recipients to
49know that what they have is not the original, so that any problems introduced
50by others will not reflect on the original authors' reputations.
51
52Finally, any free program is threatened constantly by software patents.  We
53wish to avoid the danger that redistributors of a free program will
54individually obtain patent licenses, in effect making the program proprietary.
55To prevent this, we have made it clear that any patent must be licensed for
56everyone's free use or not licensed at all.
57
58The precise terms and conditions for copying, distribution and modification
59follow.
60
61TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
62
630. This License applies to any program or other work which contains a notice
64placed by the copyright holder saying it may be distributed under the terms of
65this General Public License.  The "Program", below, refers to any such program
66or work, and a "work based on the Program" means either the Program or any
67derivative work under copyright law: that is to say, a work containing the
68Program or a portion of it, either verbatim or with modifications and/or
69translated into another language.  (Hereinafter, translation is included
70without limitation in the term "modification".) Each licensee is addressed as
71"you".
72
73Activities other than copying, distribution and modification are not covered by
74this License; they are outside its scope.  The act of running the Program is
75not restricted, and the output from the Program is covered only if its contents
76constitute a work based on the Program (independent of having been made by
77running the Program).  Whether that is true depends on what the Program does.
78
791. You may copy and distribute verbatim copies of the Program's source code as
80you receive it, in any medium, provided that you conspicuously and
81appropriately publish on each copy an appropriate copyright notice and
82disclaimer of warranty; keep intact all the notices that refer to this License
83and to the absence of any warranty; and give any other recipients of the
84Program a copy of this License along with the Program.
85
86You may charge a fee for the physical act of transferring a copy, and you may
87at your option offer warranty protection in exchange for a fee.
88
892. You may modify your copy or copies of the Program or any portion of it, thus
90forming a work based on the Program, and copy and distribute such modifications
91or work under the terms of Section 1 above, provided that you also meet all of
92these conditions:
93
94    a) You must cause the modified files to carry prominent notices stating
95    that you changed the files and the date of any change.
96
97    b) You must cause any work that you distribute or publish, that in whole or
98    in part contains or is derived from the Program or any part thereof, to be
99    licensed as a whole at no charge to all third parties under the terms of
100    this License.
101
102    c) If the modified program normally reads commands interactively when run,
103    you must cause it, when started running for such interactive use in the
104    most ordinary way, to print or display an announcement including an
105    appropriate copyright notice and a notice that there is no warranty (or
106    else, saying that you provide a warranty) and that users may redistribute
107    the program under these conditions, and telling the user how to view a copy
108    of this License.  (Exception: if the Program itself is interactive but does
109    not normally print such an announcement, your work based on the Program is
110    not required to print an announcement.)
111
112These requirements apply to the modified work as a whole.  If identifiable
113sections of that work are not derived from the Program, and can be reasonably
114considered independent and separate works in themselves, then this License, and
115its terms, do not apply to those sections when you distribute them as separate
116works.  But when you distribute the same sections as part of a whole which is a
117work based on the Program, the distribution of the whole must be on the terms
118of this License, whose permissions for other licensees extend to the entire
119whole, and thus to each and every part regardless of who wrote it.
120
121Thus, it is not the intent of this section to claim rights or contest your
122rights to work written entirely by you; rather, the intent is to exercise the
123right to control the distribution of derivative or collective works based on
124the Program.
125
126In addition, mere aggregation of another work not based on the Program with the
127Program (or with a work based on the Program) on a volume of a storage or
128distribution medium does not bring the other work under the scope of this
129License.
130
1313. You may copy and distribute the Program (or a work based on it, under
132Section 2) in object code or executable form under the terms of Sections 1 and
1332 above provided that you also do one of the following:
134
135    a) Accompany it with the complete corresponding machine-readable source
136    code, which must be distributed under the terms of Sections 1 and 2 above
137    on a medium customarily used for software interchange; or,
138
139    b) Accompany it with a written offer, valid for at least three years, to
140    give any third party, for a charge no more than your cost of physically
141    performing source distribution, a complete machine-readable copy of the
142    corresponding source code, to be distributed under the terms of Sections 1
143    and 2 above on a medium customarily used for software interchange; or,
144
145    c) Accompany it with the information you received as to the offer to
146    distribute corresponding source code.  (This alternative is allowed only
147    for noncommercial distribution and only if you received the program in
148    object code or executable form with such an offer, in accord with
149    Subsection b above.)
150
151The source code for a work means the preferred form of the work for making
152modifications to it.  For an executable work, complete source code means all
153the source code for all modules it contains, plus any associated interface
154definition files, plus the scripts used to control compilation and installation
155of the executable.  However, as a special exception, the source code
156distributed need not include anything that is normally distributed (in either
157source or binary form) with the major components (compiler, kernel, and so on)
158of the operating system on which the executable runs, unless that component
159itself accompanies the executable.
160
161If distribution of executable or object code is made by offering access to copy
162from a designated place, then offering equivalent access to copy the source
163code from the same place counts as distribution of the source code, even though
164third parties are not compelled to copy the source along with the object code.
165
1664. You may not copy, modify, sublicense, or distribute the Program except as
167expressly provided under this License.  Any attempt otherwise to copy, modify,
168sublicense or distribute the Program is void, and will automatically terminate
169your rights under this License.  However, parties who have received copies, or
170rights, from you under this License will not have their licenses terminated so
171long as such parties remain in full compliance.
172
1735. You are not required to accept this License, since you have not signed it.
174However, nothing else grants you permission to modify or distribute the Program
175or its derivative works.  These actions are prohibited by law if you do not
176accept this License.  Therefore, by modifying or distributing the Program (or
177any work based on the Program), you indicate your acceptance of this License to
178do so, and all its terms and conditions for copying, distributing or modifying
179the Program or works based on it.
180
1816. Each time you redistribute the Program (or any work based on the Program),
182the recipient automatically receives a license from the original licensor to
183copy, distribute or modify the Program subject to these terms and conditions.
184You may not impose any further restrictions on the recipients' exercise of the
185rights granted herein.  You are not responsible for enforcing compliance by
186third parties to this License.
187
1887. If, as a consequence of a court judgment or allegation of patent
189infringement or for any other reason (not limited to patent issues), conditions
190are imposed on you (whether by court order, agreement or otherwise) that
191contradict the conditions of this License, they do not excuse you from the
192conditions of this License.  If you cannot distribute so as to satisfy
193simultaneously your obligations under this License and any other pertinent
194obligations, then as a consequence you may not distribute the Program at all.
195For example, if a patent license would not permit royalty-free redistribution
196of the Program by all those who receive copies directly or indirectly through
197you, then the only way you could satisfy both it and this License would be to
198refrain entirely from distribution of the Program.
199
200If any portion of this section is held invalid or unenforceable under any
201particular circumstance, the balance of the section is intended to apply and
202the section as a whole is intended to apply in other circumstances.
203
204It is not the purpose of this section to induce you to infringe any patents or
205other property right claims or to contest validity of any such claims; this
206section has the sole purpose of protecting the integrity of the free software
207distribution system, which is implemented by public license practices.  Many
208people have made generous contributions to the wide range of software
209distributed through that system in reliance on consistent application of that
210system; it is up to the author/donor to decide if he or she is willing to
211distribute software through any other system and a licensee cannot impose that
212choice.
213
214This section is intended to make thoroughly clear what is believed to be a
215consequence of the rest of this License.
216
2178. If the distribution and/or use of the Program is restricted in certain
218countries either by patents or by copyrighted interfaces, the original
219copyright holder who places the Program under this License may add an explicit
220geographical distribution limitation excluding those countries, so that
221distribution is permitted only in or among countries not thus excluded.  In
222such case, this License incorporates the limitation as if written in the body
223of this License.
224
2259. The Free Software Foundation may publish revised and/or new versions of the
226General Public License from time to time.  Such new versions will be similar in
227spirit to the present version, but may differ in detail to address new problems
228or concerns.
229
230Each version is given a distinguishing version number.  If the Program
231specifies a version number of this License which applies to it and "any later
232version", you have the option of following the terms and conditions either of
233that version or of any later version published by the Free Software Foundation.
234If the Program does not specify a version number of this License, you may
235choose any version ever published by the Free Software Foundation.
236
23710. If you wish to incorporate parts of the Program into other free programs
238whose distribution conditions are different, write to the author to ask for
239permission.  For software which is copyrighted by the Free Software Foundation,
240write to the Free Software Foundation; we sometimes make exceptions for this.
241Our decision will be guided by the two goals of preserving the free status of
242all derivatives of our free software and of promoting the sharing and reuse of
243software generally.
244
245NO WARRANTY
246
24711. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR
248THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN OTHERWISE
249STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE
250PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED,
251INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
252FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND
253PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE,
254YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
255
25612. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL
257ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE
258PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
259GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR
260INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA
261BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
262FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER
263OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
264
265END OF TERMS AND CONDITIONS
266
267How to Apply These Terms to Your New Programs
268
269If you develop a new program, and you want it to be of the greatest possible
270use to the public, the best way to achieve this is to make it free software
271which everyone can redistribute and change under these terms.
272
273To do so, attach the following notices to the program.  It is safest to attach
274them to the start of each source file to most effectively convey the exclusion
275of warranty; and each file should have at least the "copyright" line and a
276pointer to where the full notice is found.
277
278    One line to give the program's name and a brief idea of what it does.
279
280    Copyright (C) <year> <name of author>
281
282    This program is free software; you can redistribute it and/or modify it
283    under the terms of the GNU General Public License as published by the Free
284    Software Foundation; either version 2 of the License, or (at your option)
285    any later version.
286
287    This program is distributed in the hope that it will be useful, but WITHOUT
288    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
289    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
290    more details.
291
292    You should have received a copy of the GNU General Public License along
293    with this program; if not, write to the Free Software Foundation, Inc., 59
294    Temple Place, Suite 330, Boston, MA 02111-1307 USA
295
296Also add information on how to contact you by electronic and paper mail.
297
298If the program is interactive, make it output a short notice like this when it
299starts in an interactive mode:
300
301    Gnomovision version 69, Copyright (C) year name of author Gnomovision comes
302    with ABSOLUTELY NO WARRANTY; for details type 'show w'.  This is free
303    software, and you are welcome to redistribute it under certain conditions;
304    type 'show c' for details.
305
306The hypothetical commands 'show w' and 'show c' should show the appropriate
307parts of the General Public License.  Of course, the commands you use may be
308called something other than 'show w' and 'show c'; they could even be
309mouse-clicks or menu items--whatever suits your program.
310
311You should also get your employer (if you work as a programmer) or your school,
312if any, to sign a "copyright disclaimer" for the program, if necessary.  Here
313is a sample; alter the names:
314
315    Yoyodyne, Inc., hereby disclaims all copyright interest in the program
316    'Gnomovision' (which makes passes at compilers) written by James Hacker.
317
318    signature of Ty Coon, 1 April 1989
319
320    Ty Coon, President of Vice
321
322This General Public License does not permit incorporating your program into
323proprietary programs.  If your program is a subroutine library, you may
324consider it more useful to permit linking proprietary applications with the
325library.  If this is what you want to do, use the GNU Library General Public
326License instead of this License.
327
328
329"CLASSPATH" EXCEPTION TO THE GPL
330
331Certain source files distributed by Oracle America and/or its affiliates are
332subject to the following clarification and special exception to the GPL, but
333only where Oracle has expressly included in the particular source file's header
334the words "Oracle designates this particular file as subject to the "Classpath"
335exception as provided by Oracle in the LICENSE file that accompanied this code."
336
337    Linking this library statically or dynamically with other modules is making
338    a combined work based on this library.  Thus, the terms and conditions of
339    the GNU General Public License cover the whole combination.
340
341    As a special exception, the copyright holders of this library give you
342    permission to link this library with independent modules to produce an
343    executable, regardless of the license terms of these independent modules,
344    and to copy and distribute the resulting executable under terms of your
345    choice, provided that you also meet, for each linked independent module,
346    the terms and conditions of the license of that module.  An independent
347    module is a module which is not derived from or based on this library.  If
348    you modify this library, you may extend this exception to your version of
349    the library, but you are not obligated to do so.  If you do not wish to do
350    so, delete this exception statement from your version.
351