Sync with latest Instiki trunk. Changes:

1) Upgrade Rails to 1.2.3
2) Revert RedCloth to previous version (who %#$@ cares?)
3) Preserve the Rails Security fix  to vendor/rails/actionpack/lib/action_controller/caching.rb from Revision 80.

vendor/rails/actionwebservice/lib/action_web_service/version.rb

@@ -2,7 +2,7 @@ module ActionWebService
   module VERSION #:nodoc:
     MAJOR = 1
     MINOR = 2
-    TINY  = 2
+    TINY  = 3
 
     STRING = [MAJOR, MINOR, TINY].join('.')
   end