* Do not reject subcomponents that refine an abstract
          subcomponent into another abstract subcomponent

        For testcase AADL-CTS/02-Semantic/SC0008/AADL-4.6-L2/01-pos in aadlqa
        * Find_Compoennt_Classifier returns either the actual
          component classifier, or dereference renames

          Fix for test AADL-CTS/04-Examples/04_2/Aircraft_Cockpit_4_2 in aadlqa