Always print a message when the hero teleports

It's useful to get a message as indication you suddenly moved somewhere.
For instance, MSGTYPE=stop can be used on this to avoid bumbling in the
wrong direction after a spontaneous uncontrolled teleport.

src/teleport.c

@@ -355,6 +355,8 @@ boolean allow_drag;
             }
         }
     }
+    You("materialize in %s location!",
+        (nux == u.ux0 && nuy == u.uy0) ? "the same" : "a different");
     /* must set u.ux, u.uy after drag_ball(), which may need to know
        the old position if allow_drag is true... */
     u_on_newpos(nux, nuy); /* set u.<x,y>, usteed-><mx,my>; cliparound() */