Settings: Add Utility function

Conflicts:
	src/com/android/settings/Utils.java
status bar: brightness control

Conflicts:
	res/values/ras_strings.xml
status bar: don't expose quick pull down on tablet
status bar: quick settings pulldown, use a simple list summary

Conflicts:
	res/values/ras_strings.xml
volume rocker: make safe headset volume user configurable

Conflicts:
	res/values/ras_strings.xml
navigation bar: custom height

Conflicts:
	res/values/minimalaosp_arrays.xml
	res/values/ras_strings.xml