• sync distrib/special/mksh/Makefile with bin/mksh/Build.sh and

fix the regression test’s results while here, which have been
  broken since cid 10049D9BE5254CE65B8
• get rid of separate copyright file which was intended for De-
  bian; track down commits in all files of oksh-mirbsd and mksh
  to get correct copyright years per-file, as is BSD custom

expr.c

@@ -1,8 +1,28 @@
 /*	$OpenBSD: expr.c,v 1.19 2006/04/10 14:38:59 jaredy Exp $	*/
 
+/*-
+ * Copyright (c) 2003, 2004, 2005, 2006, 2007, 2008, 2009
+ *	Thorsten Glaser <tg@mirbsd.org>
+ *
+ * Provided that these terms and disclaimer and all copyright notices
+ * are retained or reproduced in an accompanying document, permission
+ * is granted to deal in this work without restriction, including un-
+ * limited rights to use, publicly perform, distribute, sell, modify,
+ * merge, give away, or sublicence.
+ *
+ * This work is provided "AS IS" and WITHOUT WARRANTY of any kind, to
+ * the utmost extent permitted by applicable law, neither express nor
+ * implied; without malicious intent or gross negligence. In no event
+ * may a licensor, author or contributor be held liable for indirect,
+ * direct, other damage, loss, or other issues arising in any way out
+ * of dealing in the work, even if advised of the possibility of such
+ * damage or existence of a defect, except proven that it results out
+ * of said person's immediate fault when using the work as intended.
+ */
+
 #include "sh.h"
 
-__RCSID("$MirOS: src/bin/mksh/expr.c,v 1.25 2009/05/16 15:09:07 tg Exp $");
+__RCSID("$MirOS: src/bin/mksh/expr.c,v 1.26 2009/05/16 16:59:35 tg Exp $");
 
 /* The order of these enums is constrained by the order of opinfo[] */
 enum token {