Fix & Optimize HAVE_KERNEL_LZO
gcc: add Compiler optimizations config options
gcc: add use CCACHE config option
restore lzo optimizations
kernel gets too big
disable vermagic check
LOAD_FREQ (4*HZ+61) avoids loadavg More
tweaked page write back
tweaked swappiness
tweaked entropy
tweaked cache pressure
arch/arm/mach-msm/Kconfig: decouple QCACHE from MSM board selection

Signed-off-by: Paul Reioux <reioux@gmail.com>
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