Makefile: adding config variable for Os/O2/O3 compilation
fix build errors with -O2 flag
defconfig update
fs:cifs:transport: fix unitiliazed variable
Makefile: improved build flags
Makefile: use -fno-pic to compile modules
without this flag kernel can't load modules
fix wrong build flags setup and add more build flags

Conflicts:
	Makefile
Makefile: improve build flags
Makefile: enable graphite loop optimization
Makefile: adding config variable for Ofast compilation
defconfig updates
Makefile: improved build flags
Makefile: use old build flags and added -fgraphite flag. performace are higher
Makefile: remove -ftracer flags to keep the kernel smaller and make some order

Conflicts:
	Makefile
	arch/arm/Makefile