Adds support for revoking permissions.

- 2 new methods in PackageManager: set and getRevokedPermissions.
- new permission android.permission.REVOKE_PERMISSIONS that guards the new methods.
- new widget that can revoke permissions and is to be used in Settings app.
- setting to enable disable permission managment.
- special message for force closed applications that have revoked permissions.
- "Reset permissions" on force close dialogue for applications wiht revoked permissions.

compile fix.
Change-Id: I19aace30b6e2bd2075231f8a8581c22b428e86e8