Diff-Ext: Copyright (c) 2003-2006, Sergey Zorin
          All rights reserved.

Redistribution and use in source and binary forms, with or without 
modification, are permitted provided that the following conditions
are met:
   1. Redistributions  of  source  code   must  retain  the  above 
      copyright notice,  this list of conditions and the following
      disclaimer.
   2. Redistributions in binary  form  must  reproduce  the  above
      copyright notice,  this list of conditions and the following 
      disclaimer  in  the  documentation  and/or  other  materials 
      provided with the distribution.

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CONTRIBUTORS  BE  LIABLE  FOR  ANY DIRECT,  INDIRECT, INCIDENTAL,  SPECIAL,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
OR BUSINESS INTERRUPTION)  HOWEVER CAUSED AND ON ANY THEORY  OF  LIABILITY,
WHETHER IN CONTRACT,  STRICT LIABILITY,  OR  TORT  (INCLUDING NEGLIGENCE OR
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