2004-12-12  Michael Natterer  <mitch@gimp.org>

	* app/paint-funcs/paint-funcs.[ch]: added new function
	copy_region_nocow() as a workaround for the fact that sharing
	tiles with the projection is heavily broken.

	* app/base/tile-manager.c (tile_invalidate): added a warning when
	entering the code path that breaks badly.

	* app/core/gimp-edit.[ch]: added gimp_edit_copy_visible(), using
	the non-COW copying function above.

	* app/widgets/gimphelp-ids.h: added GIMP_HELP_COPY_VISIBLE.

	* app/actions/edit-actions.c
	* app/actions/edit-commands.[ch]: added action & callback for
	"edit-copy-visible".

	* menus/image-menu.xml.in: added "edit-copy-visible" to the image
	menu.

	* tools/pdbgen/pdb/edit.pdb: added gimp_edit_copy_visible()
	PDB wrapper.

	* app/pdb/edit_cmds.c
	* app/pdb/internal_procs.c
	* libgimp/gimpedit_pdb.[ch]: regenerated.

	* plug-ins/script-fu/scripts/copy-visible.scm: removed all code
	and made it a backward compa...