2003-11-23  Michael Natterer  <mitch@gimp.org>

	* libgimpwidgets/gimpcolordisplay.[ch]: added API to
	enable/disable a filter. A disabled filter has no effect.

	* libgimpmodule/gimpmodule.h: incremented GIMP_MODULE_ABI_VERSION.

	* app/widgets/gimpcolordisplayeditor.c: added a check column to
	the "Active Filters" tree view so the effect of all filters can
	quickly be toggled. Cleanup.

	* modules/cdisplay_colorblind.c: removed "none" from the enum and
	from the GUI because disabling a filter is implemented generically
	now.

	* modules/cdisplay_colorblind.c
	* modules/cdisplay_gamma.c
	* modules/cdisplay_highcontrast.c
	* modules/cdisplay_proof.c: added mnemonics, cleanup.