Use a better mechanism for updating autogenerated variables.

Use a better mechanism for updating autogenerated variables.

* lisp/muse-mode.el (muse-mode-hook): Remove ugly kludge.

* lisp/muse-mode.el (muse-mode): Call muse-update-values-hook.

* lisp/muse-protocols.el: Add `muse-update-url-regexp' to
  muse-update-values-hook.

* lisp/muse-publish.el (muse-publish-markup-buffer): Call
  muse-update-values-hook.

* lisp/muse-wiki.el: Add `muse-wiki-update-local-wikiword-regexp' and
  `muse-wiki-update-interwiki-regexp' to muse-update-values-hook.
  (muse-wiki-update-local-wikiword-regexp): Quote an argument so that an
  error is fixed.
  (muse-wiki-update-custom-values): Replace with function that gives a
  warning and an explanation.

* examples/mwolson/muse-init.el (muse-blosxom-base-directory): Update my
  example so that people who use it won't have a wrong value in
  muse-mode-hook.
git-archimport-id: mwolson@gnu.org--2006/muse--main--1.0--patch-88