> >> Feel free to change it so that instead of calling 
> >> `switch-to-buffer' it calls some alias or it (funcall 
> >> menu-bar-select-buffer-function <buf>).
> > That would be great.  What do you need from me - a patch?
> 
> For example, yes, including ChangeLog entry and a tiny note 
> in etc/NEWS.

Attached.  Changelog entry:

2011-06-17  Drew Adams <drew.adams@oracle.com>

	* menu-bar.el: Use function variable instead of switch-to-buffer.
	(menu-bar-select-buffer-function): New variable.
	(menu-bar-update-buffers): Use menu-bar-select-buffer-function.