Update build-tools to ab/6001388

https://ci.android.com/builds/branches/aosp-build-tools/grid?head=6001388&tail=6001388

Test: treehugger
Change-Id: I8e60443582bed339841fa2d6496fe661d54d527d
39 files changed
tree: 9ed1f0a77ca0af21b2900b2daaa39f2b18307ec9
  1. common/
  2. darwin-x86/
  3. linux-x86/
  4. path/
  5. build-prebuilts.sh
  6. manifest.xml
  7. OWNERS