Changed an "#elif TARGET_HOST_UNIX_X11" to "#else", since this simply

Changed an "#elif TARGET_HOST_UNIX_X11" to "#else", since this simply
governed menu aesthetics.  I think that it's better to have a default
that works than to break completely, should freeglut ever be ported to
a new (non-WIN32, non-UNIX/X11) target.

git-svn-id: svn+ssh://svn.code.sf.net/p/freeglut/code/trunk/freeglut/freeglut@248 7f0cb862-5218-0410-a997-914c9d46530a