Public Licenses are designed to make sure that you have the freedom to distribute copies of free software
(and charge for this service if you wish), that you receive source code or can get it if you want it, that you can
change the software or use pieces of it in new free programs; and that you know you can do these things. To
protect your rights, we need to make restrictions that forbid anyone to deny you these rights or to ask you to
surrender the rights. These restrictions translate to certain responsibilities for you if you distribute copies of the
software, or if you modify it. For example, if you distribute copies of such a program, whether gratis or for a
fee, you must give the recipients all the rights that you have. You must make sure that they, too, receive or can
get the source code. And you must show them these terms so they know their rights. We protect your rights
with two steps: (1) copyright the software, and (2) offer you this license which gives you legal permission to
copy, distribute and/or modify the software. Also, for each author's protection and ours, we want to make
certain that everyone understands that there is no warranty for this free software. If the software is modified by
someone else and passed on, we want its recipients to know that what they have is not the original, so that
any problems introduced by others will not reflect on the original authors' reputations. Finally, any free
program is threatened constantly by software patents. We wish to avoid the danger that redistributors of a free
program will individually obtain patent licenses, in effect making the program proprietary. To prevent this, we
have made it clear that any patent must be licensed for everyone's free use or not licensed at all. The precise
terms and conditions for copying, distribution and modification follow.
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND
MODIFICATION
0.
This License applies to any program or other work which contains a notice placed by the copyright holder
saying it may be distributed under the terms of this General Public License. The "Program", below, refers to
any such program or work, and a "work based on the Program" means either the Program or any derivative
work under copyright law: that is to say, a work containing the Program or a portion of it, either verbatim or
with modifications and/or translated into another language. (Hereinafter, translation is included without
limitation in the term "modification".) Each licensee is addressed as "you". Activities other than copying,
distribution and modification are not covered by this License; they are outside its scope. The act of running the
Program is not restricted, and the output from the Program is covered only if its contents constitute a work
based on the Program (independent of having been made by running the Program). Whether that is true
depends on what the Program does.
1.
You may copy and distribute verbatim copies of the Program's source code as you receive it, in any medium,
provided that you conspicuously and appropriately publish on each copy an appropriate copyright notice and
disclaimer of warranty; keep intact all the notices that refer to this License and to the absence of any warranty;
and give any other recipients of the Program a copy of this License along with the Program. You may charge a
fee for the physical act of transferring a copy, and you may at your option offer warranty protection in
exchange for a fee.
2.
You may modify your copy or copies of the Program or any portion of it, thus forming a work based on the
Program, and copy and distribute such modifications or work under the terms of Section 1 above, provided
that you also meet all of these conditions: a) You must cause the modified files to carry prominent notices
stating that you changed the files and the date of any change. b) You must cause any work that you distribute
or publish, that in whole or in part contains or is derived from the Program or any part thereof, to be licensed
as a whole at no charge to all third parties under the terms of this License. c) If the modified program normally
reads commands interactively when run, you must cause it, when started running for such interactive use in
the most ordinary way, to print or display an announcement including an appropriate copyright notice and a
notice that there is no warranty (or else, saying that you provide a warranty) and that users may redistribute
the program under these conditions, and telling the user how to view a copy of this License. (Exception: if the
Program itself is interactive but does not normally print such an announcement, your work based on the
Program is not required to print an announcement.) These requirements apply to the modified work as a
whole. If identifiable sections of that work are not derived from the Program, and can be reasonably
considered independent and separate works in themselves, then this License, and its terms, do not apply to
those sections when you distribute them as separate works. But when you distribute the same sections as
part of a whole which is a work based on the Program, the distribution of the whole must be on the terms of
this License, whose permissions for other licensees extend to the entire whole, and thus to each and every
part regardless of who wrote it. Thus, it is not the intent of this section to claim rights or contest your rights to
work written entirely by you; rather, the intent is to exercise the right to control the distribution of derivative or
collective works based on the Program. In addition, mere aggregation of another work not based on the
Program with the Program (or with a work based on the Program) on a volume of a storage or distribution
medium does not bring the other work under the scope of this License.
3.
You may copy and distribute the Program (or a work based on it, under Section 2) in object code or
