Move 64-bit headers/libs to android-21

64-bit headers/libs hid in android-19, the highest API level when 64-bit
started, and the actually number for L wasn't known then.

Continue to symlink from other level to android-21, so projects build
for both 32- and 64-bit don't need to set LOCAL_SDK_VERSION higher than
necessary just to get 64-bit headers/libs, and risk unintended use of new APIs

BUG=17885653

Change-Id: I0edef2a624c71b2b2365d5660b4f221303ce15e5
2799 files changed
tree: acc20159dc3207b6e6dea633bff64274ae7dbd6f
  1. 4/
  2. 5/
  3. 6/
  4. 7/
  5. 8/
  6. 9/
  7. Android.mk
  8. CleanSpec.mk