added stream helper to properly convert content of TStringStream
added stream helper to properly convert content of TStringStream

Wosi/DelphiASTTemp,RomanYankovsky/DelphiAST,uschuster/DelphiAST,monkeyxu/DelphiAST,LaKraven/DelphiAST,AmesianX/DelphiAST,Wosi/DelphiAST,NickRing/DelphiAST,vintagedave/DelphiAST