bug#1077: 23.0.60; x-create-frame: (wrong-type-argument number-or-marker-p nil)

[Drew Adams]

> By design a minibuffer is a special buffer and a minibuffer 
> window is a special window.  The concepts of a standalone
> minibuffer window are mostly unchanged from that of a
> minibuffer window attached to a normal frame.

If so, then both (a) it should be possible for the minibuffer frame to have a
menu-bar - just like a "normal" frame, and (b) it should be possible for the
`Minibuf' menu-bar menu to be shown when you use a standalone minibuffer frame.