am 9bc88726: Merge change I45302ff0 into eclair-mr2

Merge commit '9bc88726cb24e92007d42c126ec094e687b3905f' into eclair-mr2-plus-aosp

* commit '9bc88726cb24e92007d42c126ec094e687b3905f':
  make prebuilt .apks require LOCAL_CERTIFICATE
tree: 7f3ae694401aa27f1e167153e71d4d2048dcb1b7
  1. core/
  2. libs/
  3. target/
  4. tools/
  5. buildspec.mk.default
  6. cleanspec.mk
  7. envsetup.sh