Silence warning about an unused variable in Q_ASSUME.

Change-Id: Ia7dd537d1f0dadb1dc41b8123fda0da82e83598b
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
qdoc: Don't document QML signal handlers

qdoc now ignores QML signal handler comments
and does not report errors for missing QML
signal handler documentation.

Task-number: QTBUG-29993
Change-Id: If2daae80944c8b85312d38d4ee8c07ebe1f79001
Reviewed-by: J-P Nurmi <jpnurmi@digia.com>
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
Mac: Fix inactive window appearance

The inactive palette values were set to be the same as the disabled
palettte whereas, on Mac, they are the same as the active palette.

Also, some of the logic to draw inactive looking widgets was a bit
dubious. Add to that the fact that HITheme is not responding to
kThemeStateInactive as expected, or so it looks.

Task-number: QTBUG-29860
Change-Id: I5d67765a9411a40449a8a4440276b2fad167f7c4
Reviewed-by: Eike Ziller <eike.ziller@digia.com>
Reviewed-by: Jens Bache-Wiig <jens.bache-wiig@digia.com>
QIcon: ensure that QIconLoader is initialized

Make sure that QIconLoader is initialized when QIcon::themeName()
is called. Otherwise, themeName() may return the wrong value.

Change-Id: I54621e31da24bdbe745e7d6ae6a1d58cb4190cd7
Reviewed-by: Jens Bache-Wiig <jens.bache-wiig@digia.com>