Snap for 7464903 from d03d88dc970cf5414ebeeeb7e2d1266d9dd81a87 to sc-release

Change-Id: I466b46cd19305c41be0bbaa4610d34bdbaa14480
tree: 26144977e01ba500e236f244ca05cf368084a2c7
  1. libbacktrace/
  2. libunwindstack/
  3. Android.bp
  4. OWNERS
  5. PREUPLOAD.cfg