2003-01-31  Michael Natterer  <mitch@gimp.org>

	* app/core/gimpitem.[ch]: added gimp_item_configure() and
	gimp_item_copy().

	* app/core/gimpdrawable.c (gimp_drawable_configure,copy): use them.

	* app/vectors/gimpvectors.[ch]: added gimp_vectors_new(),
	gimp_vectors_copy() and gimp_vectors_copy_points(). Use the new
	GimpItem functions just as GimpDrawable does. Added a
	get_memsize() implementation.

	* app/vectors/gimpstroke.[ch]: made it a GimpObject and added
	a get_memsize() implementation.

	* app/undo.c: implemented vectors undo as if the new GimpVectors
	functions above worked.

	* app/gui/dialogs-constructors.c
	* app/gui/vectors-commands.c
	* app/tools/gimpvectortool.c: use gimp_vectors_new,copy().