Update libretro.h
add some debug messages
now it crashes at retromain.c
Add some more debug messages
cfg files are now saved in the correct location
Fixed saves:
- nvram, cfg, memcards and inputs will be saved to savedir\mame, if no savedir is specified in retroarch's
config it will fallback to system directory
- samples and artwork can be added to system directory\mame\artwork and system\mame\samples
Merge pull request #24 from fr500/master

Fix mame save directories