hard-dep for Qt 4.8

[Allen Winter]

On Wednesday 11 January 2012 11:47:00 AM Shaun Reich wrote:
> Prompting motion for making Qt 4.8 a hard dependency for KDE
> 4.9/master. Currently kde-baseapps/plasma/folderview does not build
> against 4.7 due to an (albeit minor) api usage.
> 
> Not sure how other areas in KDE fair against this, most notably the
> Plasma area (with QML and what not).
> 
I would be against increasing the minimum Qt version requirement
unless there is a strong reason to do so.  Like there are new features
that we really, really need from Qt 4.8.

Until this decision is finalized people should refrain from
committing Qt 4.8-only code into KDE. 

> If we depend on it, we need to set the CMake check obviously.
> 
sure.