Optional Qt 4.7 dependency (Qt 4.7 pre-release users should read this)

[Markus]

On Donnerstag 06 Mai 2010 16:04:43 Thiago Macieira wrote:
> Em Quinta-feira 06 Maio 2010, às 14:27:25, Aurélien Gâteau escreveu:
> > kdelibs does not depend on Qt 4.7 yet, but since Qt 4.7 is planned for
> > release on week 23, we could make kdelibs 4.5 depends on Qt 4.7
> 
> I don't think it's wise to depend on 4.7 that late in the game.

I think we don't have a choice. I just downgraded to Qt 4.6 and immediately 
encountered this bug:
https://bugs.kde.org/show_bug.cgi?id=239840