Snap for 8485725 from 5ff2ac47e5169fe2a2ac34ac10353ed05c85b774 to tm-qpr1-release

Change-Id: Id091d6c406cc6d764ca193b34c1c898d56b5edf9
tree: da0c365d3a91eb655abe41fbe7a08c0e8833ce7a
  1. libbacktrace/
  2. libunwindstack/
  3. OWNERS
  4. PREUPLOAD.cfg