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
volume rocker wake: add volume keys to isWakeKey KeyEvents

follow https://github.com/CyanogenMod/android_frameworks_base/commit/fedeb99f03158750fdd1b14dc32078fb6418f03a
status bar power menu
PackageManager: add persist property to enable lazy dexopt
status bar power menu: use constants
Merge remote-tracking branch 'upstream/lollipop-ras-mr1' into lp50x-test

Conflicts:
	core/java/android/provider/Settings.java