am 6b894c8: AI 147808: add "current sdk" link using the new sdk.current 

Merge commit '6b894c8cec676cf0811743c864bcb1937714f2c0' into donut

* commit '6b894c8cec676cf0811743c864bcb1937714f2c0':
  AI 147808: add "current sdk" link using the new sdk.current variable
tree: e18c53a27e153216672b92bf8714e3144d407b2f
  1. core/
  2. libs/
  3. target/
  4. tools/
  5. buildspec.mk.default
  6. cleanspec.mk
  7. envsetup.sh