bug#15873: 24.3.50; Make F10 toggle the tmm menu

[Dani Moncayo]

Severity: wishlist

>From "emacs -Q":
1. Mx menu-bar-mode
2. F10
3. F10

The first F10 opens up the tmm menu, but the second one tries to do
the same, and fails, obviously.

IMO, than behavior doesn't make sense, Instead, please make F10 close
the tmm menu if it is already open.  (that would make the behavior
also consistent with that of drop-down TTY menus).

TIA.

In GNU Emacs 24.3.50.1 (i686-pc-mingw32)
 of 2013-11-06 on LEG570
Bzr revision: 115006 rgm@gnu.org-20131106175648-ms1emc1ls7n2d1pb
Windowing system distributor `Microsoft Corp.', version 6.1.7601
Configured using:
 `configure --enable-checking 'CFLAGS=-O0 -g3' CPPFLAGS=-DGLYPH_DEBUG=1'

-- 
Dani Moncayo