-
gtk_menu_shell_insert() is a virtual function that was being directly invoked from the class vtable. Turn it into a proper signal and emit it in the usual way. See https://bugzilla.gnome.org/show_bug.cgi?id=656565. This is a backport of Ryan Lortie's commit 05aeaeef from the GTK+ 3 branch.
5ada51d3