Gtk3: some widgets missed GTK_ORIENTATION_VERTICAL when converted GtkVBox->GtkGrid
Following on from bug #656550, there were a couple of other instances when comparing Gtk2 and Gtk3 setup_widgets() where the former did gtk_vbox_new() but the latter's gtk_grid_new() wasn't followed by anything to set the orientation to be vertical.
I don't think these instances matter, since I don't think they ever get more than one child. But they may as well be consistent with Gtk2.
(I haven't audited the rest of the code for these.)