[svn-r23350] I cleaned up some code and added comments for my previous checkin of the DESY project.

Tested on koala.

test/plugin_lib/dynlib1.h

@@ -1,9 +1,35 @@
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * Copyright by The HDF Group.                                               *
+ * Copyright by the Board of Trustees of the University of Illinois.         *
+ * All rights reserved.                                                      *
+ *                                                                           *
+ * This file is part of HDF5.  The full HDF5 copyright notice, including     *
+ * terms governing use, modification, and redistribution, is contained in    *
+ * the files COPYING and Copyright.html.  COPYING can be found at the root   *
+ * of the source code distribution tree; Copyright.html can be found at the  *
+ * root level of an installed copy of the electronic HDF5 document set and   *
+ * is linked from the top-level documents page.  It can also be found at     *
+ * http://hdfgroup.org/HDF5/doc/Copyright.html.  If you do not have          *
+ * access to either file, you may request a copy from help@hdfgroup.org.     *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+/*
+ * Programmer:	Raymond Lu
+ *		13 February 2013
+ *
+ * Purpose:	Tests the plugin module (H5PL)
+ */
 #include <stdlib.h>
 #include <stdio.h>
 #include <hdf5.h>
 
 #define FILTER_DYNLIB1_VERS 1
 
+const H5PL_type_t   H5PL_get_plugin_type(void);
+const int           H5PL_get_plugin_version(void);
+const char*         H5PL_get_plugin_name(void);
+const H5Z_class2_t* H5PL_get_plugin_info(void);
+
 /* Local prototypes for filter functions */
 static size_t H5Z_filter_dynlib1(unsigned int flags, size_t cd_nelmts,
     const unsigned int *cd_values, size_t nbytes, size_t *buf_size, void **buf);