anchor.diff:  
   {===TAbDfInputWindow=================================================}
   constructor TAbDfInputWindow.Create(aStream       : TStream;
  -                                    aStreamSize   : longint;
  +                                    aStreamSize   : Int64;
                                       aWinSize      : integer;
                                       aChainLength  : integer;
                                       aUseDeflate64 : boolean;
  
positive.code:       procedure iwSlide;
      public
        constructor Create(aStream       : TStream;
                           aStreamSize   : longint;
                           aWinSize      : integer;
                           aChainLength  : integer;
                           aUseDeflate64 : boolean;
  
negative.code:       FStart        : PAnsiChar;
        FStartOffset  : longint;
        FStream       : TStream;
        FStreamSize   : Int64;
        FUseCRC32     : boolean;
        FUseDeflate64 : boolean;
        FWinMask      : integer;
  