Add support for HWND, (X11 Window on Linux).  Not sure however if the correct environment variables get set, SDL DLL may have it's own copy.  May require SDL_putenv, etc instead.
Add support for HWND, (X11 Window on Linux).  Not sure however if the correct
environment variables get set, SDL DLL may have it's own copy.  May require
SDL_putenv, etc instead.

voyageur/openglide,voyageur/openglide,voyageur/openglide