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

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

@@ -174,6 +174,8 @@ public class GroupReaderWriterTest
         StringBuilder xml = new StringBuilder();
         GroupWriter.write(expected, xml);
         assertFalse(xml.toString().isEmpty());
+
+        System.out.println(xml.toString());
         
         Group actual = GroupReader.read(xml.toString());
         assertNotNull(actual);