(live) Rename mfd to wfd and use perror
(live) Rename mfd to wfd and use perror

heuripedes/libretro-lutro,floreal/libretro-lutro,libretro/libretro-lutro,libretro/libretro-lutro,libretro/libretro-lutro,heuripedes/libretro-lutro,RobLoach/libretro-lutro,floreal/libretro-lutro,floreal/libretro-lutro,RobLoach/libretro-lutro