Moved subclass reloading responsibilities to Dependencies

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@509 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activesupport/lib/dependencies.rb

@@ -35,6 +35,10 @@ def clear
   def require_or_load(file_name)
     load? ? load("#{file_name}.rb") : require(file_name)
   end
+
+  def remove_subclasses_for(*classes)
+    classes.each { |klass| klass.remove_subclasses }
+  end
 end
 
 Object.send(:define_method, :require_or_load)     { |file_name| Dependencies.require_or_load(file_name) } unless Object.respond_to?(:require_or_load)

railties/lib/dispatcher.rb

@@ -49,9 +49,7 @@ def dispatch(cgi = CGI.new, session_options = ActionController::CgiRequest::DEFA
     private
       def reset_application
         Dependencies.clear
-        ActiveRecord::Base.remove_subclasses
-        ActiveRecord::Observer.remove_subclasses
-        ActionController::Base.remove_subclasses
+        Dependencies.remove_subclasses_for(ActiveRecord::Base, ActiveRecord::Observer, ActionController::Base)
       end
 
       def controller_path(controller_name, module_name = nil)