(featurep 'multi-tty) => t on Windows

[Juanma Barranquero]

>From etc/NEWS:

  *** Emacs now supports using both X displays and ttys in one session.
  With an Emacs server active (M-x server-start), `emacsclient -t'
  creates a tty frame connected to the running emacs server.  You can
  use any number of different ttys.  `emacsclient -c' creates a new X11
  frame on the current $DISPLAY (or a tty frame if $DISPLAY is not set).

  You can test for the presence of this feature in your Lisp code by
  testing for the `multi-tty' feature.

Currently, (featurep 'multi-tty) returns t in the Windows (NT_GUI)
port. Should it?

  Juanma