DeskClock: Add feature to play random song as an alarm.

Patchset 10: Close open cursor

Change-Id: Ia3d2f28d71456ba16aac4474db15cddacada9410

Conflicts:

	res/values/cm_arrays.xml
	res/values/cm_strings.xml
	src/com/android/deskclock/alarms/AlarmKlaxon.java