PackageManager: allow build-time disabling of components

Allow components to be specified as disabled at build time (applied on boot).
This allows stock OTA components to be marked as disabled

Conflicts:
	core/res/res/values/ras_symbols.xml
volume rocker wake: add volume keys to isWakeKey KeyEvents

follow https://github.com/CyanogenMod/android_frameworks_base/commit/fedeb99f03158750fdd1b14dc32078fb6418f03a
Merge branch 'psoa_r2' of https://github.com/EuclideanROM/platform_frameworks_base into psoa_r2