Merge changes Icf107950,I1637525e

* changes:
  Move methods of MultiBigramMap to cpp file.
  Fix: ver4 bigram GC.
tree: 65d725f8669916990416d1662c12c624a55514f4
  1. dictionaries/
  2. java/
  3. native/
  4. tests/
  5. tools/
  6. Android.mk
  7. CleanSpec.mk