Adding color-blindness "helpers" and simulation to kmag [ping Olaf]

Ok, so I think everyone (on this list anyway) knows my current "pet 
project" by now... I'd like to add color manipulation to kmag.

Currently I have color blindness simulation using something of a 
hodge-podge of algorithms since the best paper I have isn't quite 
complete and I've had to do some reverse engineering from output of 
other simulators.

Eventually I intend to re-add the 'invert' feature from KDE3 (I guess it 
was removed to reduce complexity i.e. not do any image processing, but 
might as well re-add it now that much more complex processing will be 
available) and to add a daltonize mode (probably the one from [1]). 
Probably other modes i.e. using libcolorblind should be added as well, 
though I'm not sure how motivated I'll be to do that myself.

I'll post a patch before committing the sim code, but I'd like to get a 
feel because first I want to commit some whitespace cleanup so I can get 
clean patches without having to thwap kate all the time.

Thoughts? At the very least, is it OK to do the whitespace cleanup?

-- 
Matthew
 > A: Yes.
 >> Q: Are you sure?
 >>> A: Because it reverses the logical flow of conversation.
 >>>> Q: Why is top posting annoying in email?