Add platform-specific header includes
SDL_opengl - add proper includes per platform - same for SDL_opengles2
Flip the scissor rect too
Remove various window size related code from video-rice
Ditch various unused Combiner code from video-rice
Use a better hack for front-face:back-face inversion
Add a hack to stop the flashing (oh god the flashing (it's present on an unmodified build of m64p osx too))
Mode video-rice deletion
Builds on Linux as well.

Garbage screen though.
Merge git://github.com/meancoot/mupen64plus-libretro
Use correct valid_extension.
Builds for Win32/Win64 as well.
Add v64 and z64 to supported ROM extensions
Implement retro_reset
Merge pull request #1 from libretro/master

Linux/Windows build fixes