Ignore bigrams that are not also listed as unigrams

This is a cherry pick of I14b67e51 on jb-dev

Bug: 6340915
Change-Id: Iaa512abe1b19ca640ea201f9761fd7f1416270ed
5 files changed
tree: ba0fb1c4d704433a663e5bdc7f6c68253792c625
  1. dictionaries/
  2. java/
  3. native/
  4. tests/
  5. tools/
  6. Android.mk
  7. CleanSpec.mk