Merge pi-platform-release to stage-aosp-master - DO NOT MERGE

Change-Id: Icdd94f58f2dd258f6c30cfa3bf1a3de85d12d2fb
tree: effe167cf96876bee8a312caf06f418807322f05
  1. darwin-x86/
  2. linux-x86/
  3. build-prebuilts.sh
  4. manifest.xml