Update libretro.h
Fix log interface calls.
(libretro) Reimplement logging function
Build fix
Here's another of those broken printfs.
Merge pull request #4 from Alcaro/master

Fix logging, again
(OSX) Set min OS version to 10.6
(QNX) Fix QNX build
Added CodeBreaker cheat support
Added GameShark and Action Replay cheat codes support
Merge pull request #5 from heuripedes/master

Add cheat support
Merge pull request #9 from libretro/master

Update