make fromHSL public, add toHSL

[Hans Meine]

Am Mittwoch, 13. Juni 2007 18:00:17 schrieb Matthew Woehlke:
> If you just don't want to make these public... ok. That's fine. We
> won't. (Or... we'll wait for pigment to go prime-time :-).) But please
> address the above concerns which are real /now/.
>
> Specifically:
>
> - Do we want to force an unfamiliar (and in some opinions, unintuitive)
> color model on Windows users?

IMHO it would be cool if the color dialog had HLS controls (which - as 
everyone agreed - should be the default on Windows at least), but AFAICS that 
does not require a *public* API in kdelibs, right?

Ciao, /  /
     /--/
    /  / ANS