Brings java wrapper updates from develop

The wrappers compile but fail tests due to some missing develop
functionality

java/examples/groups/H5Ex_G_Iterate.java

@@ -1,6 +1,5 @@
 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
  * 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     *
@@ -58,7 +57,7 @@ public class H5Ex_G_Iterate {
     }
 
     private static void do_iterate() {
-        long file_id = -1;
+        long file_id = HDF5Constants.H5I_INVALID_HID;
 
         // Open a file using default properties.
         try {