Snap for 4686875 from c3236d6d9f6aa72bc087d168a6f27f9c56a145e1 to pi-release

Change-Id: Ife987d4ccfe099c380a58e01a4162e0eda184147
tree: f9fe08ef2b7be7cafe92d5c4233a401c6afb1ea8
  1. libbt-vendor/
  2. Android.mk
  3. CleanSpec.mk