am b9ef0a4b: Merge "Add several classes from dx tool to the dexgen project"

Merge commit 'b9ef0a4b5b3fdbb388ba2f262a370fc3aa66cae5' into dalvik-dev

* commit 'b9ef0a4b5b3fdbb388ba2f262a370fc3aa66cae5':
  Add several classes from dx tool to the dexgen project