GCW0: Fix a couple of warnings
GCW0: Makefile: Set a default value to CROSS_COMPILE
GCW0: Makefile: Define -DMIPS_XBURST and -DMIPS_32R2
Fix a couple of warnings
Merge https://github.com/pcercuei/ReGBA
Merge https://github.com/pcercuei/ReGBA