add missing copyright info

doc/makedefs.6

@@ -1,6 +1,17 @@
-.TH MAKEDEFS 6 "29 Apr 2010"
-.\" NetHack 3.6  makedefs.6	$NHDT-Date: 1432512786 2015/05/25 00:13:06 $  $NHDT-Branch: master $:$NHDT-Revision: 1.7 $
-.UC 4
+.TH MAKEDEFS 6 "25 May 2015" NETHACK
+.de ND
+.ds Nd \\$3
+..
+.de NB
+.ds Nb \\$2
+..
+.de NR
+.ds Nr \\$2
+..
+.ND $NHDT-Date: 1524689549 2018/04/25 20:52:29 $
+.NB $NHDT-Branch: NetHack-3.6.0 $
+.NR $NHDT-Revision: 1.10 $
+.ds Na Kenneth Lorber
 .SH NAME
 makedefs \- NetHack miscellaneous build-time functions
 .SH SYNOPSIS
@@ -258,3 +269,7 @@ The NetHack Development Team
 .SH "SEE ALSO"
 .PP
 .BR dgn_comp (6)
+.SH COPYRIGHT
+This file is Copyright (C) \*(Na and was last modified \*(Nd (version
+\*(Nb:\*(Nr).
+NetHack may be freely redistributed.  See license for details.