am 5a8d2fd1: Merge "Cache UserHistoryDictionary for each language" into jb-dev

* commit '5a8d2fd1d353b2039f0d340301f9dac779cb4e64':
  Cache UserHistoryDictionary for each language
tree: b80d4fa461b3010f856698ce071490c3e3bd2bac
  1. dictionaries/
  2. java/
  3. native/
  4. tests/
  5. tools/
  6. Android.mk
  7. CleanSpec.mk