Bug#568950: Installing KDE4 should remove KDE3 KDM theme packages

[Leonard Norrgård <leonard.norrgard@refactor.fi>]

Package: kdm
Version: 4:4.3.4-4

For a long time one of my old systems that had been upgraded from KDE3 
to KDE4 suffered from a visually broken KDM login screen.

By removing two old KDE3 theme packages that were left installed, 
despite the upgrade. to KDE4, the KDM greeter now displays correctly, 
similar to how systems installed with KDE4 from the start.

Apparently KDM in KDE4 interacts with these old KDE3 KDM themes in a 
visually bad way (while still allowing logins OK).

The two packages that needs to be removed (conflicted) are:

   kde-kdm-themes
   kdmtheme