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