Games doesn't display Dreamcast .cdi and .gdi images
Migrated from https://bugzilla.gnome.org/show_bug.cgi?id=790218
@exalm:
RetroArch is able to see and launch them.
@exalm:
Also, Redream is only able to load files with gdi|chd|cdi extensions. https://github.com/libretro/libretro-super/blob/master/dist/info/redream_libretro.info https://github.com/inolen/redream/blob/master/src/host/retro_host.c#L221