split compiled_method into method and compiled_method_info

lib/parfait/module.rb

@@ -15,15 +15,21 @@ module Parfait
   class Module < Object
     def initialize name , superclass
       @instance_methods = []
-      @name = name.to_sym
+      @name = name
       @super_class = superclass
       @meta_class = Virtual::MetaClass.new(self)
     end
 
     def add_instance_method method
-      raise "not a method #{method.class} #{method.inspect}" unless method.is_a? Virtual::CompiledMethod
+      raise "not a method #{method.class} #{method.inspect}" unless method.is_a? Method
       raise "syserr " unless method.name.is_a? Symbol
+      method.for_class = self
       @instance_methods << method
+      method
+    end
+
+    def create_instance_method name , arg_names
+      add_instance_method Method.new( name , arg_names )
     end
 
     # this needs to be done during booting as we can't have all the classes and superclassses