Merge cherrypicks of [4793640, 4793602, 4793603, 4793660, 4793604, 4793680,...

Merge cherrypicks of [4793640, 4793602, 4793603, 4793660, 4793604, 4793680, 4793681, 4793581, 4793582, 4793625, 4793626, 4793627, 4793628, 4793700, 4793701, 4793702, 4793703, 4793704, 4793705, 4793661, 4793720, 4793721, 4793722, 4793723, 4793724, 4793725, 4793726, 4793727, 4793728, 4793583, 4793740, 4793760, 4793662, 4793780, 4793729] into pi-release-2

Change-Id: Ib2d16212f5099e42d971bfdaf8c260dbf0427889