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/template_handler.rb

@@ -0,0 +1,17 @@
+module ActionView
+  class TemplateHandler
+    def self.line_offset
+      0
+    end
+
+    def initialize(view)
+      @view = view
+    end
+
+    def render(template, local_assigns)
+    end
+
+    def compile(template)
+    end
+  end
+end