Update 'altered' state

servers/slapd/back-ldap/Copyright

+Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
+COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+
+This is an altered version.
+
+Copyright 1999, Howard Chu, All rights reserved. <hyc@highlandsun.com>
+
+Permission is granted to anyone to use this software for any purpose
+on any computer system, and to alter it and redistribute it, subject
+to the following restrictions:
+
+1. The author is not responsible for the consequences of use of this
+   software, no matter how awful, even if they arise from flaws in it.
+
+2. The origin of this software must not be misrepresented, either by
+   explicit claim or by omission.  Since few users ever read sources,
+   credits should appear in the documentation.
+
+3. Altered versions must be plainly marked as such, and must not be
+   misrepresented as being the original software.  Since few users
+   ever read sources, credits should appear in the documentation.
+
+4. This notice may not be removed or altered.

servers/slapd/back-ldap/unbind.c

 /* unbind.c - ldap backend unbind function */
 /* $OpenLDAP$ */
 /*
- * Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
+ * Copyright 1998-1999 The OpenLDAP Foundation, All Rights Reserved.
  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
  */
 /* This is an altered version */