Merge qt-r1-dev-plus-aosp-without-vendor (5817612) into stage-aosp-master

No content change.

Bug: 135460123
Change-Id: Ib2e87af5313daca7e0c79843f0d7000eb95390a5
Merged-In: I67a7040a90c369abf5a0c3e7cf0e16f351addb99
tree: 6a561f5379c73c4eb7ba64915284437755028320
  1. .gitignore
  2. README
  3. apps/
  4. build/
  5. util/