Support for 24bpp when DDBLT_KEYSRC etc are set

[Lionel Ulmer]

> I do not have any game that uses 24 bits (to the best of my knowledge) 
>  This is more of an exersize in getting to know the code better.  Of 
> course if we don't want to support 24 bpp...

No, it's fine to support it. I was just curious that's all :-)

> Thankyou for looking at it, I will have to do some changes before I 
> resubmit.

No problem... Peer review is always a good way to find bugs before
committing to CVS.

                   Lionel

-- 
		 Lionel Ulmer - http://www.bbrox.org/