Make ImageView drawable update more efficient in some cases.

When updating the view's drawable via setImageResource or setImageURI,
make sure to skip the layout pass if the old and new drawable have equal
sizes. This follows what is already done for setDrawable().

Change-Id: If73d225e38d0a2f7c616c4aeb33f67bdaed390f1
Suppress String resources build warnings

warnings suppressed are:
aapt: warning: **** string '%s' has no default or required localization for
aapt: warning: string '%s' has no default translation in

Patch Set 2: move ifdef and only suppress warnings for packages that
             define NO_DEFAULT_TRANSLATION_WARNINGS and/or
             NO_LOCALIZATION_WARNING

Patch Set 3: by default do not show warnings unless
             SHOW_DEFAULT_TRANSLATION_WARNINGS and/or
             SHOW_LOCALIZATION_WARNINGS

Change-Id: I50ef2a623959a1cc53053b446328df8e34cc99e8
Fix for notification light settings

Conflicts:
	services/java/com/android/server/NotificationManagerService.java