Low-end devices need help! - SlimBean

-> Check for wakelocks faster
-> More granular hidden apps selection
-> Kill hidden and service_b apps at higher lmk
-> Rearrange OOM values [similar to SuperCharger! But not exact]

Change-Id: If6163a8c15b8c3ec622a44124609be21b4359e36

Conflicts:
	services/java/com/android/server/am/ProcessList.java