Don't match locales with different scripts in ResourceFilter

Previously, AAPT would match locales even if they had different
explicit scripts if the requested locale was just a languages. Now
we require explicit listing of the languages with different explicit
scripts in order for the locale to be included.

Bug: 29412034
Change-Id: Ia118a5a7f9aec49f6c3c53b9195a0ae1a57f53fd