Settings: Forward port Performance settings

Change-Id: Ib510b35fc2763c6942737afa33873aa5d349a173

Performance settings: remove dithering setting

This setting has no effect in CM10.2, as SurfaceFlinger has now been
taught to automatically Do The Right Thing [tm] with regards to deciding
when to enable surface dithering.

Change-Id: I67fba732440507c1209f2793d826badd4b4d34d5

Conflicts:
	AndroidManifest.xml
	res/values/arrays.xml
	res/xml/settings_headers.xml
	src/com/android/settings/Utils.java
Settings: PerformanceControl from Omni [2/2]

Change-Id: Ife3b6a8642f5a6602762332be2751dd057a8ec97
Signed-off-by: STELIX <ssspinni@gmail.com>

Conflicts:
	Android.mk
	AndroidManifest.xml
	res/values/config.xml
	res/values/cr_strings.xml
	res/xml/ioscheduler_settings.xml
	res/xml/memory_management.xml
	res/xml/performance_settings.xml
	res/xml/processor_settings.xml
	res/xml/settings_headers.xml
	src/com/android/settings/Settings.java
	src/com/oct/tentacles/BootReceiver.java
	src/com/oct/tentacles/IOScheduler.java
	src/com/oct/tentacles/Processor.java