Hi lovely developers, I'm a long time Emacs user, first time Emacs patch
submitter. :) 

Right now in Emacs on a TTY, clicking on the menu bar with the mouse
pops up menu navigation through tmm.el.  I think it would make more
sense for mouse clicks to pop up visual menus via menu-bar-open-mouse by
default. 

But I get why that's not the current default. These visual menus
currently behave very poorly with a mouse on a Linux TTY: Clicking
<mouse-1> anywhere selects the currently selected item, not the item you
clicked on. I have a prototype fix for this that I've been working on.
If you think it makes sense, I can finish it up. I've attached the
changes in case you want to take a look. 

Let me know your thoughts. 

  -- MJF