2008-01-03  Michael Natterer  <mitch@gimp.org>

	Some more gegl code to have some playground for experimenting.

	* app/gegl/Makefile.am
	* app/gegl/gegl-types.h
	* app/gegl/gimpoperationdesaturate.[ch]: ported desaturate.

	* app/gegl/gimp-gegl.c: register it.

	* app/gegl/gimpoperationtilesink.h: fix name of parent class member.

	* app/core/gimpdrawable-desaturate.c: use the new operator, but
	keep the old code around (prepared for runtime switching).

	* app/core/gimpdrawable-invert.c: prepare for runtime switching
	here too.


svn path=/trunk/; revision=24514