2003-11-25  Michael Natterer  <mitch@gimp.org>

	* app/core/gimpobject.[ch]: removed gimp_g_object_get_memsize()...

	* app/core/gimp-utils.[ch]: ...and added it here along with
	some other memsize utilities for GHashTables and G(S)Lists.

	* app/core/gimp.c
	* app/core/gimpimage.c
	* app/core/gimpparasitelist.c
	* app/core/gimpviewable.c
	* app/vectors/gimpstroke.c (GimpObject::get_memsize): use the new
	functions.