gradient layer about delaboratory HOT 3 CLOSED

Yes, it will be implemented, but not just for RGB, each tool is reusable in 
each colorspace, so the same effect could be achieved in LAB with L channel or 
in CMYK or in any other colorspace.

Additional idea on controls: To unite 2 different ways of RGB channels 
processing it may be used combined equation -

For m as 'multiplication' coefficient and p as power coefficient and for each 
RGB channel -

out = m * input ^ p

With m and p defaults to 1 and user input range like 0.1..10.
So if leaving p=1 and changing only m user can simulate 'linear gradient 
filter' and leaving m=1 and changing p - simulate 'gamma-like gradient filter'. 
Also changing m and p at once user may achive more complex effect.

done on SVN