am a8ba4a0e: Merge "Add the tool etc1tool to the sdk." into eclair

Merge commit 'a8ba4a0e361b44dd5edf954a8b088b310023eb3b' into eclair-plus-aosp

* commit 'a8ba4a0e361b44dd5edf954a8b088b310023eb3b':
  Add the tool etc1tool to the sdk.