Log Message:
Update emacs-snapshot to 23.1.91.20100111.

Changes:
* .dir-locals.el (change-log-mode): Restore bug-reference-mode.
* info/dir: Add Semantic.
* info/dir: Add EDT entry.
* .dir-locals.el (bug-reference-url-format): Change to debbugs.gnu.org.
* elisp package updates: edt, cedet, chart, eieio, files-x, font-setting,
  hfy-cmap, htmlfontify, mule-conf, ucs-normalize, mpc, imap, tramp,
  levents, lucid, sym-comp, org, js, and subword.