Privacy Guard : Reimplement backed by AppOps[1/3]

Re-implements privacy guard to use appops.

Change-Id: I2b52e8cf0d6e126fb156f83df885b5551503cd9d

Conflicts:
	core/java/android/provider/Settings.java
	core/res/res/values/cm_strings.xml
	core/res/res/values/symbols.xml