Patch to compile Polycode in VS2012 for Win64
Patch to compile Polycode in VS2012 for Win64

- Change in PolyWinCore.cpp from SetClassLong to SetClassLongPtr for Win32
  and Win64 compatibility.

fodinabor/Polycode,Xetlin/Lua,hksonngan/Polycode,GovanifY/Polycode,sshaileshk/Polycode,zeebok/Polycode,cartman300/Polycode,Xetlin/Lua,zeebok/Polycode,Xetlin/Lua,fodinabor/Polycode,cartman300/Polycode,Xetlin/Lua,fodinabor/Polycode,hksonngan/Polycode,thorsummoner/polycode,hksonngan/Polycode,zeebok/Polycode,GovanifY/Polycode,ivansafrin/Polycode,zeebok/Polycode,mcanthony/Polycode,carlosmarti/Polycode,thorsummoner/polycode,sshaileshk/Polycode,cartman300/Polycode,cartman300/Polycode,carlosmarti/Polycode,thorsummoner/polycode,ivansafrin/Polycode,mcanthony/Polycode,sshaileshk/Polycode,carlosmarti/Polycode,ivansafrin/Polycode,ivansafrin/Polycode,hksonngan/Polycode,GovanifY/Polycode,mcanthony/Polycode,mcanthony/Polycode,fodinabor/Polycode,GovanifY/Polycode,thorsummoner/polycode,sshaileshk/Polycode