Upgrade to Rails 2.0.2

Upgraded to Rails 2.0.2, except that we maintain

   vendor/rails/actionpack/lib/action_controller/routing.rb

from Rail 1.2.6 (at least for now), so that Routes don't change. We still
get to enjoy Rails's many new features.

Also fixed a bug in Chunk-handling: disable WikiWord processing in tags (for real this time).

vendor/rails/actionpack/lib/action_view.rb

@@ -1,5 +1,5 @@
 #--
-# Copyright (c) 2004-2006 David Heinemeier Hansson
+# Copyright (c) 2004-2007 David Heinemeier Hansson
 #
 # Permission is hereby granted, free of charge, to any person obtaining
 # a copy of this software and associated documentation files (the
@@ -21,12 +21,17 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #++
 
-$:.unshift(File.dirname(__FILE__) + "/action_view/vendor")
+require 'action_view/template_handler'
+require 'action_view/template_handlers/builder'
+require 'action_view/template_handlers/erb'
+require 'action_view/template_handlers/rjs'
+
 require 'action_view/base'
 require 'action_view/partials'
+require 'action_view/template_error'
 
 ActionView::Base.class_eval do
   include ActionView::Partials
 end
 
-ActionView::Base.load_helpers(File.dirname(__FILE__) + "/action_view/helpers/")
+ActionView::Base.load_helpers