Merge s-mpr-2021-12-05

Change-Id: Ib04358729db63d7438a8950597e5776992c8ea22
tree: 48e0b2403de19a1475a492a80459cc9a7b14edf8
  1. libbacktrace/
  2. libunwindstack/
  3. OWNERS
  4. PREUPLOAD.cfg