2007-12-29  Michael Natterer  <mitch@gimp.org>

	* gegl/operation/gegl-operation-area-filter.c
	* gegl/operation/gegl-operation-composer.c
	* gegl/operation/gegl-operation-filter.c
	* gegl/operation/gegl-operation-point-composer.c
	* gegl/operation/gegl-operation-point-filter.c
	* gegl/operation/gegl-operation-sink.c
	* gegl/operation/gegl-operation-source.c
	* gegl/operation/gegl-operation.[ch]
	* operations/affine/affine.c
	* operations/color/mono-mixer.c
	* operations/color/remap.c
	* operations/color/stretch-contrast.c
	* operations/core/shift.c
	* operations/enhance/bilateral-filter.c
	* operations/enhance/snn-mean.c
	* operations/io/display.c
	* operations/io/png-save.c
	* operations/io/save-buffer.c
	* operations/render/FractalExplorer.c
	* operations/render/checkerboard.c
	* operations/render/checkerboard.c
	* operations/render/color.c
	* operations/render/noise.c
	* operations/render/text.c
	* operations/render/text.c: constified some API using GeglRectangle.


svn path=/trunk/; revision=1774