am 2fdd428e: Fix some backup reader/writer issues; make local transport do backup

Merge commit '2fdd428e0f18384160f7c38ce3a2cd9ba7e7b2c2'

* commit '2fdd428e0f18384160f7c38ce3a2cd9ba7e7b2c2':
  Fix some backup reader/writer issues; make local transport do backup
  Fix the jni initializer.
  Add RestoreFileHelper, BackupDataInput, and add java wrappers for the methods on BackupDataOutput.
  Fix bug #1812041: activity manager crash with bad args.
  Journal backup requests so that they won't be lost in a crash
  Fix data connection issues.