Ticket #1147: tests NamespaceArray and ServerArray

.../resources/TestPressureNS_with_ns_srv_arrays.NodeSet2.xml

...sources/TestTemperatureNS_with_ns_srv_arrays.NodeSet2.xml

...scripts/resources/expected/test_merge_ns0_temperature.xml

...esources/expected/test_merge_ns0_temperature_pressure.xml

.../expected/test_merge_pressure_with_ref_to_temperature.xml

...ipts/resources/expected/test_merge_with_ns_srv_arrays.xml

...pts/resources/expected/test_merge_with_ns_srv_arrays2.xml

tests/scripts/resources/expected/test_ns0_alone.xml

tests/scripts/resources/ns0.xml

tests/scripts/test_nodeset_utils.py