2006-05-05  Michael Natterer  <mitch@gimp.org>

	* app/plug-in/gimppluginmanager.[ch]: added signals
	"plug-in-opened" and "plug-in-closed". Added functions
	gimp_plug_in_manager_add_open_plug_in() and _remove_open_plugin()
	which maintain the list of open plug-ins and emit the signals.

	* app/plug-in/gimpplugin.c (gimp_plug_in_open)
	(gimp_plug_in_close): don't touch manager->open_plug_ins and don't
	ref/unref the plug-in. Call above new functions instead. Don't
	call gimp_pdb_dialogs_check().

	* app/core/gimp-gui.[ch]
	* app/gui/gui-vtable.c: removed gimp_pdb_dialogs_check().

	* app/widgets/gimppdbdialog.[ch]: removed
	gimp_pdb_dialogs_check_callback() and connect to the
	plug-in-manager's "plug-in-closed" signal instead.