2004-07-28  Michael Natterer  <mitch@gimp.org>

	Enabled disabling all menu mnemonics. Addresses bug #120034:

	* app/config/gimpguiconfig.[ch]
	* app/config/gimprc-blurbs.h: added boolean RESTART property
	"menu-menonics".

	* app/gui/preferences-dialog.c: added a GUI for it.

	* app/widgets/gimpactiongroup.[ch]: added boolean CONSTRUCT_ONLY
	property "mnemonics".

	(gimp_action_group_add_*_actions): call gimp_strip_uline() on
	the actions' labels if mnemonics is FALSE.

	* app/widgets/gimpactionfactory.[ch]
	* app/actions/actions.c: pass gui_config->menu_menmonics to
	all action groups.