am 6a144338: Switch to Thread::WalkStack rather than manual Frame::Next.

* commit '6a144338023bdc0ca6954fc71a1f9b4d94088ee4':
  Switch to Thread::WalkStack rather than manual Frame::Next.
tree: c09d28c44b9635a12aa2a8b42370baed85f5907b
  1. build/
  2. jdwpspy/
  3. src/
  4. test/
  5. tools/
  6. .gitignore
  7. Android.mk