revert to symbols

Parfait::Words were nice, but endless problems with the fact that when
you write “String” you get a string.
Symbols take care of uniqueness at the same time

lib/virtual/passes/minimizer.rb

@@ -11,7 +11,7 @@ module Virtual
           @gonners << f
         end
       end
-      init= Parfait::Space.object_space.get_class_by_name("Kernel").get_instance_method "__init__"
+      init= Parfait::Space.object_space.get_class_by_name(:Kernel).get_instance_method :__init__
       remove init
       dump_remaining
     end

lib/virtual/passes/send_implementation.rb

@@ -39,8 +39,11 @@ module Virtual
           if ref.type.is_a?(Reference) and ref.type.of_class
             #find method and call
             clazz = ref.type.of_class
-            method = clazz.resolve_method code.name.to_s
-            raise "No method found #{code.name}" unless method
+            begin
+            method = clazz.resolve_method code.name
+            rescue
+            raise "No method found #{code.name} for #{clazz.name} in #{clazz.method_names}" unless method
+            end
             new_codes << MethodCall.new( method )
           else
             # must defer send to run-time