[1/3] framework: volume wake

If enabled pressing volume key will wake the device
and screen. If screen is off because of the proxi
sensor e.g. in call it will not be handled.

PS2:
whitespaces

PS3:
rebased

Change-Id: I189bcfed7228f24c030784d490fb7a35e382b7f6

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