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/railties/lib/console_app.rb

@@ -1,7 +1,7 @@
 require 'action_controller/integration'
 
 # work around the at_exit hook in test/unit, which kills IRB
-Test::Unit.run = true
+Test::Unit.run = true if Test::Unit.respond_to?(:run=)
 
 # reference the global "app" instance, created on demand. To recreate the
 # instance, pass a non-false value as the parameter.
@@ -23,5 +23,8 @@ end
 #reloads the environment
 def reload!
   puts "Reloading..."
-  Dispatcher.reset_application!
+  dispatcher = ActionController::Dispatcher.new($stdout)
+  dispatcher.cleanup_application(true)
+  dispatcher.prepare_application(true)
+  true
 end