removed unused NamedList

args and locals got inlined into message, forgot to delete then
ripples out due to type creation
small type class api change, more ripples, but also more consistent

test/parfait/test_space.rb

@@ -6,7 +6,7 @@ module Parfait
     def classes
       [:BinaryCode,:Block,:CacheEntry,:Callable,:CallableMethod,:Class,
         :DataObject,:Data4,:Data8,:Data16,:Data32,:Dictionary,:Factory, :Integer,:FalseClass,
-        :List,:Message, :MetaClass, :NamedList,:NilClass,:Object,:ReturnAddress,
+        :List,:Message, :MetaClass,:NilClass,:Object,:ReturnAddress,
         :Space,:TrueClass,:Type,:VoolMethod,:Word]
     end
 
@@ -123,7 +123,7 @@ module Parfait
     end
 
     def test_created_class_is_stored
-      @space.create_class( :NewerClass )
+      clazz = @space.create_class( :NewerClass )
       assert @space.get_class_by_name(:NewerClass)
     end