GNU GENERAL PUBLIC LICENSE                         Version 2, June 1991     Copyright (C) 1989, 1991 Free Software Foundation, Inc.     59 Temple Place - Suite 330, Boston, MA 02111-1307, USA          Everyone is permitted to copy and distribute verbatim copies     of this license document, but changing it is not allowed.Preamble========   The licenses for most software are designed to take away yourfreedom to share and change it.  By contrast, the GNU General PublicLicense is intended to guarantee your freedom to share and change freesoftware--to make sure the software is free for all its users.  ThisGeneral Public License applies to most of the Free SoftwareFoundation's software and to any other program whose authors commit tousing it.  (Some other Free Software Foundation software is covered bythe GNU Library General Public License instead.)  You can apply it toyour programs, too.   When we speak of free software, we are referring to freedom, notprice.  Our General Public Licenses are designed to make sure that youhave the freedom to distribute copies of free software (and charge forthis service if you wish), that you receive source code or can get itif you want it, that you can change the software or use pieces of it innew free programs; and that you know you can do these things.   To protect your rights, we need to make restrictions that forbidanyone to deny you these rights or to ask you to surrender the rights.These restrictions translate to certain responsibilities for you if youdistribute copies of the software, or if you modify it.   For example, if you distribute copies of such a program, whethergratis or for a fee, you must give the recipients all the rights thatyou have.  You must make sure that they, too, receive or can get thesource code.  And you must show them these terms so they know theirrights.   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 certainthat everyone understands that there is no warranty for this freesoftware.  If the software is modified by someone else and passed on, wewant its recipients to know that what they have is not the original, sothat any problems introduced by others will not reflect on the originalauthors' reputations.   Finally, any free program is threatened constantly by softwarepatents.  We wish to avoid the danger that redistributors of a freeprogram will individually obtain patent licenses, in effect making theprogram proprietary.  To prevent this, we have made it clear that anypatent must be licensed for everyone's free use or not licensed at all.   The precise terms and conditions for copying, distribution andmodification 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 executable form under the terms     of Sections 1 and 2 above provided that you also do one of the     following:       a. Accompany it with the complete corresponding machine-readable          source code, which must be distributed under the terms of          Sections 1 and 2 above on a medium customarily used for          software interchange; or,       b. Accompany it with a written offer, valid for at least three          years, to give any third party, for a charge no more than your          cost of physically performing source distribution, a complete          machine-readable copy of the corresponding source code, to be          distributed under the terms of Sections 1 and 2 above on a          medium customarily used for software interchange; or,       c. Accompany it with the information you received as to the offer          to distribute corresponding source code.  (This alternative is          allowed only for noncommercial distribution and only if you          received the program in object code or executable form with          such an offer, in accord with Subsection b above.)     The source code for a work means the preferred form of the work for     making modifications to it.  For an executable work, complete     source code means all the source code for all modules it contains,     plus any associated interface definition files, plus the scripts     used to control compilation and installation of the executable.     However, as a special exception, the source code distributed need     not include anything that is normally distributed (in either     source or binary form) with the major components (compiler,     kernel, and so on) of the operating system on which the executable     runs, unless that component itself accompanies the executable.     If distribution of executable or object code is made by offering     access to copy from a designated place, then offering equivalent     access to copy the source code from the same place counts as     distribution of the source code, even though third parties are not     compelled to copy the source along with the object code.  4. You may not copy, modify, sublicense, or distribute the Program