All bytecode is prefixed with:
(if (and (boundp 'emacs-version)
(or (and (boundp 'epoch::version) epoch::version)
(string-lessp emacs-version "20")))
(error "`help.el' was compiled for Emacs 20"))
wouldn't things run a tiny bit faster if we ditched the epoch test?
Do we still care about Epoch? If so, why?