remove advertising clause from mksh distribution: while I’d still prefer

when people mention that their product includes mksh, I won’t enforce to
have them advertise with my name… this should make things easier

copyright

@@ -1,9 +1,9 @@
-$MirOS: src/bin/mksh/copyright,v 1.22 2008/02/25 02:52:20 tg Rel $
+$MirOS: src/bin/mksh/copyright,v 1.23 2008/04/22 11:47:57 tg Rel $
 
 The MirBSD Korn Shell (mksh) is
 
 Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008
-	Thorsten "mirabilos" Glaser <tg@mirbsd.de>
+	Thorsten “mirabilos” Glaser <tg@mirbsd.de>
 
 Provided that these terms and disclaimer and all copyright notices
 are retained or reproduced in an accompanying document, permission
@@ -11,18 +11,14 @@ 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.
 
-Advertising materials mentioning features or use of this work must
-display the following acknowledgement:
-	This product includes material provided by Thorsten Glaser.
-
-This work is provided "AS IS" and WITHOUT WARRANTY of any kind, to
+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.
+of said person’s immediate fault when using the work as intended.
 
 
 The developer of mksh recognises the efforts of the pdksh authors,