Implement SDL driver video poke interface
Merge pull request #870 from heuripedes/sdl-poke-interface

Implement SDL 1.2 video poke interface
Rename cart_crc
Rename more references to 'ROMs'
Move config_save_on_exit to g_settings
(GX) Build fixes/cleanups
Rename game_history_size to content_history_size
Bake in HAVE_BSV_MOVIE  implicitly
(Recording) Bake in HAVE_RECORD implicitly
Cleanups
(Menu) Add description for SDL 2 video driver and update description
of SDL 1 video driver