[Qt] Problems with OwnerDraw ListWidget and friends

[Den Jean]

> Anyway , my wiki page contains things which I changed today on the
> beach ;), and will be commited when you try it on your distro and when
how test something we do not have ???
commit please

> Paul try it on his WinXP. I've already tested changes on WinXP , FC3,
> FC4 & FC7 and it looks ok.
> Pls. write me which screen resolutions and dpi settings you use on
1920x1200  and 1680x1050 
90x89 DPI