Merge change 4541 into donut

* changes:
  remember in the target-files package what version of the API recovery uses
tree: ae957ee1509c5e568cd27577a794da0257dbd4d2
  1. core/
  2. libs/
  3. target/
  4. tools/
  5. buildspec.mk.default
  6. cleanspec.mk
  7. envsetup.sh