am a0c98ef0: Ensure -user builds can run the dex preopt pass in the emulator.

Merge commit 'a0c98ef01a4c5a859fdde35fed7977b1eb919007' into eclair-plus-aosp

* commit 'a0c98ef01a4c5a859fdde35fed7977b1eb919007':
  Ensure -user builds can run the dex preopt pass in the emulator.