am 52076549: Merge "Make Beginning-of-Sentence prediction require two exposures."

* commit '520765491cbfcb8d2e66ee5c492a66eb8a726a74':
  Make Beginning-of-Sentence prediction require two exposures.
tree: 067c436e394ff4eead3d16e1819ab389e7719beb
  1. dictionaries/
  2. java/
  3. native/
  4. tests/
  5. tools/
  6. Android.mk
  7. CleanSpec.mk