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/actionmailer/test/delivery_method_test.rb

@@ -0,0 +1,51 @@
+require "#{File.dirname(__FILE__)}/abstract_unit"
+
+class DefaultDeliveryMethodMailer < ActionMailer::Base
+end
+
+class NonDefaultDeliveryMethodMailer < ActionMailer::Base
+  self.delivery_method = :sendmail
+end
+
+class ActionMailerBase_delivery_method_Test < Test::Unit::TestCase
+  def setup
+    set_delivery_method :smtp
+  end
+  
+  def teardown
+    restore_delivery_method
+  end
+
+  def test_should_be_the_default_smtp
+    assert_equal :smtp, ActionMailer::Base.delivery_method
+  end
+end
+
+class DefaultDeliveryMethodMailer_delivery_method_Test < Test::Unit::TestCase
+  def setup
+    set_delivery_method :smtp
+  end
+  
+  def teardown
+    restore_delivery_method
+  end
+  
+  def test_should_be_the_default_smtp
+    assert_equal :smtp, DefaultDeliveryMethodMailer.delivery_method
+  end
+end
+
+class NonDefaultDeliveryMethodMailer_delivery_method_Test < Test::Unit::TestCase
+  def setup
+    set_delivery_method :smtp
+  end
+  
+  def teardown
+    restore_delivery_method
+  end
+
+  def test_should_be_the_set_delivery_method
+    assert_equal :sendmail, NonDefaultDeliveryMethodMailer.delivery_method
+  end
+end
+