Add copyright notice

contrib/ldapsasl/ldapdb.c

 /* SASL LDAP auxprop implementation
- * Copyright (C) 2002 Howard Chu, hyc@symas.com
+ * Copyright (C) 2002,2003 Howard Chu, All rights reserved. <hyc@symas.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.
  */
 
 #include <config.h>