2008-06-11  Sven Neumann  <sven@gimp.org>

	* app/gegl/gimpoperationcolorbalance.c
	* app/gegl/gimpoperationcolorize.c
	* app/gegl/gimpoperationcurves.c
	* app/gegl/gimpoperationdesaturate.c
	* app/gegl/gimpoperationhuesaturation.c
	* app/gegl/gimpoperationlevels.c
	* app/gegl/gimpoperationposterize.c
	* app/gegl/gimpoperationthreshold.c
	* app/gegl/gimpoperationtilesink.c
	* app/gegl/gimpoperationtilesource.c: added const to GeglRectangle*
	argument.

svn path=/trunk/; revision=25918