Started work on Hardware callback for 3D cores
changed void *getHWData to retro_hw_render_callback, my mistake
system directory for core is now being set from qml as the systemDirectory: variable
Added to SYSTEM_DIRECTORY callback in environmentCallback, sys dir is now given to the core, nestopia still crashes though.
systemDirectory variable was added
Fixed aspect ratio for certain cores.
Enable C++11
Rework the audio code to use a circular buffer