Merge remote-tracking branch 'origin/stable' into dev

Change-Id: I33db683ebf12248b2ed14eeaf65c4bcade14bfbf

diff --cc src/quick/designer/designersupport.cpp
Simple merge

diff --cc src/quick/items/qquickrepeater.cpp
Simple merge

diff --cc src/quick/items/qquickwindow.cpp
Simple merge

diff --cc src/quick/scenegraph/util/qsgpainternode.cpp
Simple merge