bug#788: menu indications of key bindings for remapped commands

[Drew Adams]

This bug is still open.

Also, there is a regression. Yidong's temporary workaround of removing the key
reminder from the menu item no longer applies to the pretest: the <remap> <...>
key reminder has returned.

In GNU Emacs 23.1.91.1 (i386-mingw-nt5.1.2600)
 of 2010-01-02 on PRETEST
Windowing system distributor `Microsoft Corp.', version 5.1.2600
configured using `configure --with-gcc (3.4)'

A proper fix that shows the correct key (vs shows no key) is still needed.