recent dropped packages from Core are kde dependancies

[Bill Nottingham]

Rex Dieter (rdieter at math.unl.edu) said: 
> Two recent Core ejections: xscreensaver and imlib are build dependancies for
> kdeartwork (see http://bugzilla.redhat.com/bugzilla/195480 ) and
> kdegraphics (see http://bugzilla.redhat.com/bugzilla/195477) respectively.
> 
> Should these be going to Extras (too)?  I'd really rather go through the
> pain of making kdeartwork-extras, kdegraphics-extras packages for Extras
> just to get the missing pieces back.

Why is xscreensaver a *build* dep?

Bill