Update build-tools to ab/5426400
am: 4820e897d5

Change-Id: I9894c59af9ff6f788170a702827fa10142c57255
tree: 5b64f420cd737d7335abbf66dee123276b4bbb5b
  1. common/
  2. darwin-x86/
  3. linux-x86/
  4. path/
  5. build-prebuilts.sh
  6. manifest.xml
  7. OWNERS