s1736: initial import of User/Group domain and reader/writer classes

projects/cadcAccessControl/test/src/ca/nrc/cadc/ac/GroupReaderWriterTest.java

@@ -175,6 +175,8 @@ public class GroupReaderWriterTest
         GroupWriter.write(expected, xml);
         assertFalse(xml.toString().isEmpty());
 
+        System.out.println(xml.toString());
+        
         Group actual = GroupReader.read(xml.toString());
         assertNotNull(actual);
         assertEquals(expected, actual);