2001-10-18  Michael Natterer  <mitch@gimp.org>

	* app/core/gimpcontainer.[ch]: added properties for "children_type"
	and "policy". Ref/unref the "children_type" class so we can do
	signal lookups and use other introspection features without an
	existing instance of "children_type".

	The new properties are G_PARAM_CONSTRUCT_ONLY and *MUST* be passed
	to g_object_new() to ref/unref children_type's class correctly.

	* app/core/gimpdatalist.c
	* app/core/gimplist.c: pass them as construct properties.

	* app/core/gimp.c: no need to manually ref classes any more.