Swap volume buttons

Swap volume buttons when the screen is rotated by 90 or 180 degrees

Change to default behaviour not configurable due that it is now
more natural

Change-Id: I323b647066e8c73fac60067141d1add7b2f9962d

Conflicts:
	media/java/android/media/AudioManager.java

FWB: Make "Swap volume buttons" optional (1/2)

Change-Id: I067cfc5773cea1ade4daa6bb0a19c1882311d2e3

Conflicts:
	core/java/android/provider/Settings.java
Add people lookup settings keys

Change-Id: I2ff9bb7684d04f4f9b640939c7db269873aa3308

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