Upgrade to Rails 2.2.0

As a side benefit, fix an (non-user-visible) bug in display_s5().
Also fixed a bug where removing orphaned pages did not expire cached summary pages.

vendor/rails/actionpack/test/controller/addresses_render_test.rb

@@ -1,7 +1,6 @@
 require 'abstract_unit'
 
 class Address
-
   def Address.count(conditions = nil, join = nil)
     nil
   end
@@ -20,8 +19,6 @@ class AddressesTestController < ActionController::Base
   def self.controller_path; "addresses"; end
 end
 
-AddressesTestController.view_paths = [ File.dirname(__FILE__) + "/../fixtures/" ]
-
 class AddressesTest < Test::Unit::TestCase
   def setup
     @controller = AddressesTestController.new