Removing old classes and random stuff

[Mosfet]

<Oswald wrote>
> kdebase/workspace/kcontrol/background/
> 
this is also used by the kdm background generator, krootimage. i don't 
anticipate it going away for 4.0, so have fun. :)
</Oswald>

Yep, looks like the whole bgrender stuff needs porting. No problem. I'll port 
what I can to Qt and the rest to Blitz.

On a side note: I got permission to add a Blitz dep to kdelibs on Monday but 
it looks like I might not have to do that. I took some extra time out, did 
some extra work, and it looks like I might be able to avoid doing that after 
all. Kdebase on the other hand is definitely going to require it and I will 
be adding that dep on Monday.