[Development] Merge and Integration status report - 2018.09.05

[Liang Qi]

Integrations

* qt5 5.11/5.11.2/5.12 integrations are healthy, finally for 5.12

* qt5 dev, 5.12->dev merge + dev submodule update integration just started, let's see

COIN is a bit slow recently, the difference between backend vm numbers and coin running numbers is a bit too much. Colleagues are working on that. During this period, perhaps qmake timeout issue is very common on all platforms, including Linux, Windows and macOS.

-- Liang