Back out of 3109 for now as it seems to interfere with the flash

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@3150 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

actionpack/lib/action_controller/cgi_process.rb

@@ -93,7 +93,7 @@ def port_from_http_host
     def session
       unless @session
         if @session_options == false
-          @session = disabled_session_hash
+          @session = Hash.new
         else
           stale_session_check! do
             if session_options_with_string_keys['new_session'] == true
@@ -121,17 +121,13 @@ def method_missing(method_id, *arguments)
       # Delete an old session if it exists then create a new one.
       def new_session
         if @session_options == false
-          disabled_session_hash
+          Hash.new
         else
           CGI::Session.new(@cgi, session_options_with_string_keys.merge("new_session" => false)).delete rescue nil
           CGI::Session.new(@cgi, session_options_with_string_keys.merge("new_session" => true))
         end
       end
 
-      def disabled_session_hash
-        Hash.new { |h,k| raise "You disabled sessions but are attempting to set session[#{k.inspect}]" }
-      end
-
       def stale_session_check!
         yield
       rescue ArgumentError => argument_error