Merge change Ied94685e into donut

* changes:
  Add NDK version reference to template.
tree: dc6aae91f730c23c1955beb622e4332e6c26f8b4
  1. core/
  2. libs/
  3. target/
  4. tools/
  5. buildspec.mk.default
  6. cleanspec.mk
  7. envsetup.sh