Camera : Timer Snapshot

Allow user to take a snapshot after a certain amount of time.
Credits : Michael Simon for the base port
	  David Van Tonder for indicator icon

Change-Id: Ic50bf1c1f7fd85d8c48dac3e51766aeff2b381ea

Conflicts:

	res/layout/preview_module_frame.xml
	res/values/cm_arrays.xml
	res/values/cm_strings.xml
	res/xml/camera_preferences.xml
	src/com/android/camera/CameraSettings.java
	src/com/android/camera/PhotoModule.java