2003-11-07 Simon Budig  <simon@gimp.org>

	* app/vectors/gimpvectors.[ch]: New function that appends a
	duplicate of the source vectors strokes to the list of strokes
	of a target vectors object.

	* app/core/gimpimage-merge.[ch]
	* app/core/core-enums.h: Use this new function to merge
	the visible vectors in an Image. New Undo type for vectors merging.

	* app/core/core-enums.c: regenerated.

	* app/gui/vectors-menu.c
	* app/gui/vectors-commands.[ch]
	* app/widgets/gimphelp-ids.h: New Menu entry + callback to invoke
	the merge functionality. New Help ID for the menu entry.