black window on qml kcms

[Marco Martin]

Hi all,

since i'm growing a bit tired about those black screens in kcms that use qml,
i was thinking for the time being to switch to the newer (and supposedly 
better) QQuickWidget to the old (and hack-y xembed-y) 
QWidget::createWindowContainer

will be slower, hackier, but i don't think we can really ship 5.1 with kcm 
modules randomly turing black

-- 
Marco Martin