Merge 4f3b5c16cfcc5d540740274c5ca929b77d2162f6 on remote branch

Change-Id: If986fafe9c91804eaf0cc333293ac7c0142d3db4
tree: bd74012ab98798166c15a5cf6e961346ddc8a808
  1. libbt-vendor/
  2. Android.mk
  3. CleanSpec.mk