Add compiler flags
Compiler optimizations

-fmodulo-sched, -fmodulo-sched-allow-regmoves, -funswitch-loops,
-fpredictive-commoning, -fgcse-after-reload, -ftree-vectorize,
-floop-interchange, -floop-strip-mine, -floop-block, -mfpu=neon
Tweaking of compiler optimizations

Conflicts:
	arch/arm/Makefile
More makefile optimizations
Makefile optimizations
 - More optimized compiler options for makefile
 - Switch to -mtune=cortex-a8 in makefile, arm/makefile, and kernel/makefile
   as it appears to produce more efficient code
makefile: minor changeup