Telephony: Heads up meets SlimKat....SlimKat meets Google IO [3/4]
Add heads up setting for the native integration in dialer

Enabled by default

PS
- derp

PS
update commit message header

Change-Id: I0a540f2dc2667d572797a68c07b6eb471653ec16

Conflicts:
	res/xml/call_feature_setting.xml
	src/com/android/phone/CallFeaturesSetting.java