am c650bf58: Get rid of Settings.getJIDResource(), which really should live in GTalkService. Add API to store the JID resource in IM provider settings.

Merge commit 'c650bf583dbed8701da9a49b9dbd9023768f0df8'

* commit 'c650bf583dbed8701da9a49b9dbd9023768f0df8':
  Get rid of Settings.getJIDResource(), which really should live in GTalkService. Add API to store the JID resource in IM provider settings.