1.12 Merge Add tests for H5Ocopy of new object refs (#1339)

* Add tests for H5Ocopy of new object refs

* Correct class name

* Skip test because of issue with debug assertions

* Update reference file

* Fix object examples for new refs and spelling fixs

* Fix ref try-catch blocks

java/examples/datasets/H5Ex_D_UnlimitedMod.java

@@ -17,7 +17,7 @@
   file.  Next, it reopens the file, reads back the data,
   outputs it to the screen, extends the dataset, and writes
   new data to the entire extended dataset.  Finally it
-  reopens the file again, reads back the data, and utputs it
+  reopens the file again, reads back the data, and outputs it
   to the screen.
  ************************************************************/
 package examples.datasets;