Update clang-tools to ab/5784477
am: 6d3e46afe2

Change-Id: I5dc85d370d285a7a56c6ca684c32e1e644782855
tree: 5bead554b988f76020863fe727915d7261320281
  1. darwin-x86/
  2. linux-x86/
  3. build-prebuilts.sh
  4. manifest.xml