more Core dependency data

[Bill Nottingham]

Mike A. Harris (mharris at mharris.ca) said: 
> >xorg-x11-xdm

...
> A more important reason to keep it in Core however, is that it
> contains various config files and scripts which are also shared
> with gdm and kdm.  We could split those files into yet another
> package, but then we have to manually resync them with upstream
> xdm any time upstream changes them - which creates more work for
> no real big gains.

If there are scripts here, it would perhaps beehove KDM or GDM
to require XDM. :)

Bill