work on ObjectWriter

Back to the root! but lots of adjusting
ObjectWriter takes machine, machine has space
Virtual constants become Parfait::Objects etc

lib/parfait/layout.rb

@@ -22,5 +22,8 @@
 module Parfait
   class Layout < List
 
+    def get_object_class()
+      return internal_object_get(2)
+    end
   end
 end