Defining HAVE_MOUSE on Cygwin

[Ken Brown]

A Cygwin user has requested that emacs have mouse support on Cygwin even 
if it is built --with-x=no.  Does anyone see a problem with this?  If 
not, what's the best way to do it?  Here's one possibility:

=== modified file 'configure.ac'
--- configure.ac        2012-10-06 00:44:36 +0000
+++ configure.ac        2012-10-07 01:53:21 +0000
@@ -4358,6 +4358,11 @@

 AC_SUBST(WINDOW_SYSTEM_OBJ)

+## Always build with mouse support on Cygwin
+if test "$opsys" = "cygwin" && test "$window_system" = "none"; then
+  AC_DEFINE(HAVE_MOUSE, 1, [Define if you have mouse support.])
+fi
+
 AH_TOP([/* GNU Emacs site configuration template file.

 Copyright (C) 1988, 1993-1994, 1999-2002, 2004-2012



Ken

P.S. I'm not necessarily proposing this for 24.3, in view of the feature 
freeze.