build-script: add CCACHE-config, thanks @showp1984
(https://github.com/showp1984/buildscript_example/blob/master/kernel-buildscript-example.sh)
Makefile: Added Snapdragon optimizations

Conflicts:

	Makefile
Makefile: Optimizing build-options for linaro
vfp: compile with neon

Conflicts:

	arch/arm/vfp/Makefile
Revert "fs/fs-writeback: This trace event causes a ICE in the mentioned compiler"

This reverts commit a64de8870b5200ce9ab3075e17972f6903742e81.
Revert "fs/Makefile: fix typo"

This reverts commit 2bb6b5db396c23c30ff7f05933140cc8a75cd530.
Revert "fs/Makefile: ignore -03 optimization for fs-writeback.c, to fix compiling error"

This reverts commit 6bab9bb3a9fdd08cd9e2de1986d7ceb49c1034da.
Makefile-linaro: disable kernel optimization