steps towards colorspace independence

[Casper Boemann]

Hi

This is my step-by-step plan towards colorspace independence:

1) create mixColors method of KisColorStrategy - done
2) implement said method for rgb and gray - done
3) create a testbed colorstrategy that exposes problems regarding both size 
and interpretation.
4) go through every place in krita until the test colorstrategy is working 
everywhere - I hope that you will help in reporting problems, and even fixing 
things.
5) removing every occourence of QUANTUM by refactoring to use *Q_UINT8 or 
KisSelection::Type. I'm heavily comtemplating creating a KisPixelPtr to use 
instead of *Q_UINT8. This should however not be confused with a pointer to 
KisPixel.

-- 
best regards / venlig hilsen
Casper Boemann