Remove the option to bind a key by keycode with brackets; it never

worked (and no one complained!).  While it's fairly easy to fix, users
should be using keysym names and not keycodes.

Discussed at length months ago with todd@, matthieu@ and Owain.

cwmrc.5

@@ -14,7 +14,7 @@
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: June 17 2013 $
+.Dd $Mdocdate: July 8 2013 $
 .Dt CWMRC 5
 .Os
 .Sh NAME
@@ -84,10 +84,8 @@ The Mod4 key (normally the windows key).
 .Pp
 The
 .Sq -
-should be followed by either a keysym name, taken from
-.Pa /usr/X11R6/include/X11/keysymdef.h ,
-or a numerical keycode value enclosed in
-.Dq [] .
+should be followed by a keysym name, taken from
+.Pa /usr/X11R6/include/X11/keysymdef.h .
 The
 .Ar command
 may either be one from the