Merge branch 'donut' into donut-release

Conflicts:
	core/build_id.mk
tree: b890285c13b53fbf509ba0e70b4a6c8c91281a6a
  1. buildspec.mk.default
  2. cleanspec.mk
  3. core/
  4. envsetup.sh
  5. libs/
  6. target/
  7. tools/