bug#17497: 24.4.50; TTY menu glitches

[Eli Zaretskii]

> From: Glenn Morris <rgm@gnu.org>
> Cc: dickey@his.com,  17497@debbugs.gnu.org
> Date: Mon, 02 Jun 2014 12:46:53 -0400
> 
> I generally (but not I think always) used menu-bar-open.

Just FYI: doing so exposes a subtle bug, due to the fact that "M-x"
adds an item to the menu bar, which confuses the menu code if you use
horizontal arrows or C-f/C-b.