readonly param is true (Controls if the hooklist is to be updated).
This is causing grief with Tinderbox as it depends on that file to extract
the tree state when creating pages like quickparse.
bug 368792 r=cls
git-svn-id: svn://10.0.0.236/trunk@219256 18797224-902f-48f8-a5cc-f745e15eee43