Fix attributions, add HP info

servers/slapd/overlays/ppolicy.c

 /* $OpenLDAP$ */
 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
  *
- * Copyright 2004 Howard Chu, Symas Corporation.
+ * Copyright 2004 The OpenLDAP Foundation.
+ * Portions Copyright 2004 Howard Chu, Symas Corporation.
+ * Portions Copyright 2004 Hewlett-Packard Company.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -12,6 +14,11 @@
  * top-level directory of the distribution or, alternatively, at
  * <http://www.OpenLDAP.org/license.html>.
  */
+/* ACKNOWLEDGEMENTS:
+ * This work was developed by Howard Chu for inclusion in
+ * OpenLDAP Software, based on prior work by Neil Dunbar (HP).
+ * This work was sponsored by the Hewlett-Packard Company.
+ */
 
 #include "portable.h"