removing use of qt names which are removed in qt5

[Stephen Kelly]

Treeve Jelbert wrote:

> Qt5 has now removed some functions which were previously deprecated.
> 
> the attached script will scan an entire git branch and fix any use of
> the following cases:

Thanks. Actually most of those things are still there, but deprecated and 
wrapped in #if QT_DEPRECATED_SINCE(5, 0).

I also support removing the use of them from KDE4.

Thanks,

Steve.