[kde-freebsd] qt4-gui build error

[ktu]

I still don't know the cause, but I got qt4-gui built after deinstalling 
all qt[3,4] and kde related ports
and installing kdebase3. I'm not sure if installing kdebase3 had any effect.
The environment in which the build failed was a fresh and minimal gnome 
desktop with
a handfull of qt/kde ports (installed as dependencies to ktorrent or 
qt4-gui itself)

Maybe I can try to reproduce it later on a spare computer