Log Message:
Update emacs-snapshot to 24.0.92.20111206.

Changes:
        * calendar/appt.el (appt-add): Rewrite the interactive-spec to avoid
        overly zealous deletion of trailing whitespace.
        * progmodes/prolog.el (prolog-find-value-by-system): Avoid error when
        there's no inferior buffer (bug#10196).
        * net/tramp-sh.el (tramp-maybe-open-connection): Handle user
        interrupt.  (Bug#10187)
        * info.el (Info-search): Display "end of manual" when Isearch
        reaches the end of single-file Info manual.  (Bug#9918)
        * isearch.el (isearch-message-prefix): Run the input method part
        of the prompt through bidi-string-mark-left-to-right.  (Bug#10183)
        * vc/diff-mode.el (diff-find-file-name): Make `read-file-name'
        aware of remote file names.  (Bug#10124)