2017-03-23  Kjell Ahlstedt  <kjell.ahlstedt@bredband.net>

	Glib::OptionGroup: Don't allow copy or move

	The GOptionGroup contains a pointer to the Glib::OptionGroup wrapper.
	That pointer can't be changed. Copying (adding a ref) or moving a
	GOptionGroup to a second Glib::OptionGroup would be problematic.