Fix publishing bug introduced in last patch.

Fix publishing bug introduced in last patch.

* lisp/muse-project.el (muse-current-output-style): New variable that
  holds the output style that is currently being used to publish a file.
  (muse-project-page-file): When a subdirectory is used, only record
  matches.  Sort using matches, not entire list.
  (muse-project-resolve-link): Docfix.
  (muse-project-current-output-style): New function that returns the
  current output style.
  (muse-project-link-page): Use the local output style, not the other
  kind of style.
  (muse-project-publish-file): Set muse-current-output-style.

* lisp/muse-wiki.el (muse-wiki-resolve-project-page): Use
  muse-current-output-style.
git-archimport-id: mwolson@gnu.org--2006/muse--main--1.0--patch-161