[Gtk-sharp-list] Design for Indexer for GLib.List to allow [] based addressing.

[Joe Shaw]

This isn't really related to your patch directly, but since you're in
that code... :)

> GLib.List l = new GLib.List ((IntPtr) 0, typeof (Gtk.Widget));
> GLib.SList sl = new GLib.SList ((IntPtr) 0, typeof (Gtk.Widget));

This is a pretty nasty API.  Maybe we should add another constructor
which just takes the type?

Ie, add a:

        internal ListBase (System.Type element_type)
        {
                this.element_type = element_type;
        }
        
to ListBase.cs and then suitable ctors to List.cs and SList.cs.

Then you could do:

        GList.List l = new GLib.List (typeof (Gtk.Widget));

which offends my delicate sensibilities less.

Joe