Merge cherrypicks of [10912066, 10912067, 10912068, 10915261, 10915397, 10915398, 10913399, 10914988, 10915357, 10915399, 10915321, 10915322, 10915323, 10910509, 10915324, 10910510] into qt-d4-release

Change-Id: Ibdd905c389400d522d8cd72e6afdb5fe794bf546