Clock: Customize Alarm for carrier

- Customize the default auto silience value and alarm behavier in a
  call.
- Ring alarm in all user profiles even in silent and meeting mode.

Conflicts:
	res/values/config.xml
	src/com/android/deskclock/alarms/AlarmService.java
	src/com/android/deskclock/provider/AlarmInstance.java

CRs-Fixed: 1014635

Change-Id: I1b617f8f97ab6e271dcaaf854800aaae083e8b1e