am f4215886: Merge "Explain why I gave up optimizing Thread::Current for x86." into ics-mr1-plus-art

* commit 'f421588631bd97023da23d3aaf720cad411c81e4':
  Explain why I gave up optimizing Thread::Current for x86.
tree: 75edb7008177b1e16fd29737a23afb66f3d21f27
  1. build/
  2. jdwpspy/
  3. src/
  4. test/
  5. tools/
  6. .gitignore
  7. Android.mk