2006-04-02  Michael Natterer  <mitch@gimp.org>

	* app/core/gimpparasitelist.[ch] (gimp_parasite_list_add): removed
	the return value again.

	(gimp_parasite_list_find): return a const parasite.

	* app/core/gimp-parasites.[ch]
	* app/core/gimpimage.[ch]
	* app/core/gimpitem.[ch] (*_parasite_attach): take a const
	parasite. Make a local copy of the parasite struct because
	gimp_parasite_shift_parent() changes it.

	(*_parasite_find): return a const parasite.

	* app/core/gimptemplate.c
	* app/text/gimptextlayer-xcf.c
	* app/xcf/xcf-load.c: changed accordingly.