am 71d52474: Merge "Optimizations and safeguards."

* commit '71d52474fd380f967287cd5eee0084791463d162':
  Optimizations and safeguards.
tree: 6d7168838ca1bdef6600362be36f1878df5e50b8
  1. dictionaries/
  2. java/
  3. native/
  4. tests/
  5. tools/
  6. Android.mk
  7. CleanSpec.mk