frameworks: move keyguard wallpaper to system  (1/2)

Change-Id: I0eb1b5578b705c2ade4c0772fa86e09478b9f73e
Signed-off-by: Roman Birg <roman@cyngn.com>

Conflicts:
	core/java/android/provider/Settings.java
Return system theme when SecurityException is caught.

Isolated processes cannot access content resolvers so a SecurityException
will be thrown when calling getBootTheme.  This catches that
exception and returns sSystemTheme.

Change-Id: If4077adef4c657b80ba2c52a6610126dabe4ffdf
idmap: Don't log spam "CREATING STRING CACHE"

Change-Id: Idce5aa5881c8e860eca9749cc85f748303c913c0
Fix a NPE when putting a null-Bundle in an Intent

Happens frequently e.g. with GoogleAccountAuthenticator

Change-Id: I284bf153f40ee9cc3e70bce6efcc3b9e6706361b