Move to graphicsmagick

[Cyrille Berger]

> An email in this thread already answers that question:
>
> http://lists.kde.org/?l=kde-kimageshop&m=114856571013674&w=2
>
> Riddell is a packager for a big distro.

and if graphicsmagick isn't found, krita will fallback to the ImageMagick 
version one, but as it is not anymore supported by us, it might compile or 
might not, depending if their is once again an API change or not.

-- 
--- Cyrille Berger ---