2006-08-05  Michael Natterer  <mitch@gimp.org>

	Applied (modified and enhanced) patch from Chris Moller which allows
	tools to distinguish similar colors not only by composite, but also
	by R, G, B, H, S and V. Fixes bug #348291.

	* app/core/core-enums.[ch]: added new enum GimpSelectCriterion
	which can be one of { COMPOSITE, R, G, B, H, S, V }.

	* app/core/gimpimage-contiguous-region.[ch]: added
	select_criterion params and create the region based on difference
	by the selected criterion.

	* app/core/gimpchannel-select.[ch]
	* app/core/gimpdrawable-bucket-fill.[ch]: take criterion params and
	pass them through to the contiguous region functions.

	* app/tools/gimpbucketfilloptions.[ch]
	* app/tools/gimpselectionoptions.[ch]: added criterion properties
	and GUI to select it.

	* app/tools/gimpbucketfilltool.c
	* app/tools/gimpbycolorselecttool.c
	* app/tools/gimpfuzzyselecttool.c: pass the selected criterion to
	the resp. core functions.

	* app/widgets/gimpdrawabletreeview.c
	* app/widgets/gimpselectioneditor.c
	* app/display/gimpdisplayshell-dnd.c
	* tools/pdbgen/pdb/edit.pdb
	* tools/pdbgen/pdb/selection_tools.pdb: changed accordingly
	(simply pass GIMP_SELECT_CRITERION_COMPOSITE in most cases).

	* app/pdb/edit_cmds.c
	* app/pdb/selection_tools_cmds.c: regenerated.