2004-05-18  Sven Neumann  <sven@gimp.org>

	* plug-ins/common/checkerboard.c
	* plug-ins/common/colorify.c
	* plug-ins/common/colortoalpha.c
	* plug-ins/common/compose.c
	* plug-ins/common/convmatrix.c
	* plug-ins/common/csource.c
	* plug-ins/common/cubism.c
	* plug-ins/common/decompose.c
	* plug-ins/common/deinterlace.c
	* plug-ins/common/depthmerge.c
	* plug-ins/common/despeckle.c
	* plug-ins/common/destripe.c
	* plug-ins/common/diffraction.c
	* plug-ins/common/displace.c: HIG-ified.