Separated from 2960404 and changed to use a different config name and have SDL_AUDIODRIVER
This will allow the cfg file to determine whether to set SDL_VIDEODRIVER and SDL_AUDIODRIVER to directx, windib, dsound, or waveout with putenv.
Default is directx for SDL_VIDEODRIVER and dsound (current SDL_default) for SDL_AUDIODRIVER. Direct X has better full screen handling and shouldn't have problems with Vista or 7 since 8 bit is no longer default for point, etc. Direct X is also needed in 9x to render properly (not that it matters much). If a different driver is used, putenv will not be used for that particular driver,
There's also output for what video driver is being used through SDL_VideoDriverName for all OS.
win_env_var_b.patch one uses the sdl defaults and should probably be used instead.
This one uses the sdl defaults and should probably be used instead.