Update build-tools to ab/5926601 am: db9b72f96e
am: 7cceff5ce7

Change-Id: I6fcef2f363f060a2fd185c1be862ac84e3f21d5b
tree: 944c6cef76ae4fc13a955f3f8ecc8641add05719
  1. common/
  2. darwin-x86/
  3. linux-x86/
  4. path/
  5. build-prebuilts.sh
  6. manifest.xml
  7. OWNERS