better no method no super handling

also revealed bug in booting

lib/parfait/behaviour.rb

@@ -71,7 +71,6 @@ module Parfait
       return method if method
       if( self.super_class_name )
         method = self.super_class.resolve_method(m_name)
-        raise "Method not found #{m_name}, for \n#{self}" unless method
       end
       method
     end

lib/parfait/class.rb

@@ -63,7 +63,10 @@ module Parfait
     end
 
     def super_class
-      Parfait::Space.object_space.get_class_by_name(self.super_class_name)
+      raise "No super_class for class #{self.name}" unless self.super_class_name
+      s = Parfait::Space.object_space.get_class_by_name(self.super_class_name)
+      raise "superclass not found for class #{self.name} (#{self.super_class_name})" unless s
+      s
     end