Merge change 20880 into donut

* changes:
  Fix issue #2048267: Run zipalign on all prebuilts
tree: adbbc5f47413ba989ce971f69342c8b294b9921a
  1. core/
  2. libs/
  3. target/
  4. tools/
  5. buildspec.mk.default
  6. cleanspec.mk
  7. envsetup.sh