Fix Serbian address labels in non-Serbian locale

Add Serbian labels to default set (previously was only using Ukrainian
for Cyrillic languages when in a non-Cyrillic locale). This adds a net
of 3 new labels to the default label set. Added unit tests for Serbian
and Ukrainian unique characters.

Bug:11030904
Change-Id: Id35bf963ea10b89554aa0743d0f215c124b44c8d
2 files changed