Update clang-tools to ab/5988434
am: c7afec7d17

Change-Id: I1987c1f043dc911d59f554a1230a0e2354fa6306
tree: 636a5ed2473639b9ff052e1a7e75fb70ecaa20bb
  1. darwin-x86/
  2. linux-x86/
  3. build-prebuilts.sh
  4. manifest.xml