[Development] Qt 5.8 API review (vs 5.7.0)

[Edward Welbourne]

I mentioned:
>> https://codereview.qt-project.org/170651 -- qtvirtualkeyboard
Mitch Curtis replied:
> qtvirtualkeyboard looks OK.

Please give review responses on the reviews themselves
(if you can catch Gerrit up for long enough to do so).

	Eddy.