Enable multi-processor compilation in Visual Studio / NMake. Disable
console in release builds (broken in CMake atm, you have to set linker
/SUBSYSTEM:WINDOWS manually).
Version information nowe resides in EmulationStation.h and is compiled
into the EXE on Windows. An icon file is also included and on
non-Windows systems the window icon is loaded from PNG data compiled
into the EXE and set via SDL_WM_SetIcon().