bug#2059: 23.0.60; Font selection broken on non-GTK/non-XFT build.

[Christopher Oliver]

As an old school user, I tend to like to compile Emacs for small footprint, and 
prefer bitmap fonts.
So I compile with neither GTK nor XFT.  In pretest 23.0.60 under these 
conditions, the mouse menu
for font selection fails.  This bug lies in an incompatibility between 
menu-set-font (menu-bar.el),
which expects a string, and mouse-select-font (mouse.el) which yields a list 
containing a string.
The menu fed x-popup-menu in mouse-select-font has entries of the form 
(DESCRIPTION XFONT)
rather than (DESCRIPTION . XFONT), so the cdr of this is the wrong type for 
menu-set-font.
Thoughts?