chaning calling convention not to add frame/arg types

these types are only needed to debug and can be gotten from the method (also in the mesage)
just saving the 6 instructions for every call
This was made possible through previous commits on fake_memory access

lib/parfait/named_list.rb

@@ -25,6 +25,10 @@ module Parfait
 
     attr :type
 
+    def self.memory_size
+      16
+    end
+
     def to_s
       str  = "NamedList len= #{get_length}"
       str += " at #{Risc::Position.get(self)}" if Risc::Position.set?(self)