mm: adjust vm ratios

increase swappiness by 50%
decrease dirty_ratio by 50%

Conflicts:

	mm/vmscan.c
include: mm: increase readahead buffer
Makefile: adding config variable for Os/O2/O3 compilation

Conflicts:

	init/Kconfig

Conflicts:

	init/Kconfig

Conflicts:
	Makefile

Conflicts:
	Makefile
Makefile: Optimizing build-options for linaro

Conflicts:

	Makefile

Conflicts:
	Makefile
-O3 compilation fixups

Conflicts:

	fs/namei.c
lib: avoid ICE on linaro 8.12

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
add new optimization level option (gcc4.6)

A new general optimization level, -Ofast, has been introduced. It combines the existing optimization level -O3 with options that can affect standards compliance but result in better optimized code. For example, -Ofast enables -ffast-math.
http://gcc.gnu.org/gcc-4.6/changes.html

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
KozmiKKernel: Updating defconfig