Merge changes I0115fb26,I7a29bf5a,I7888f3b6,I06d5d3d8,I4c601b16, ...

* changes:
  Implemented CompositePhoneLookup#bulkUpdate.
  Allow the client to specify voicemail transcript id's
  Implement bulk update for Cp2PhoneLookup.
  Add character mappings for Bulgarian & Ukrainian in DialpadCharMappings.
  Support dual alphabets in smart search when a secondary alphabet is available.
  Commit transaction synchronously for OnHoldFragment.