move qt4 package from Xorg to Video feed

move qt4 package from Xorg to Video feed

There's some minor changes, especially to seperate
an qt4 from an qt5 installation (Host and target).
Also the x11 support got dropped - framebuffer only.
Some obvious and trivial bug fixes got applied as well,
however, apart from that, it basically is, what it was.

The Xorg feed is totally unmaintained currently,
also the early approach of running an Xserver on
embedded devices - hence the feed's name - thankfully
didn't really become the standard either.

So let's reorganise some of the stuff from the Xorg
feed worth keeping within the new Video feed.