* Version number is increased to 2.5.8.

	* Version number is increased to 2.5.8.

	* wl-thread.el (toplevel): require 'cl.
	(wl-thread-resume-entity): Call wl-thread-make-number-list.
	(wl-thread-make-number-list): New function.
	(wl-thread-entity-make-number-list-from-children): Ditt.
	(wl-thread-entity-insert-as-top): Update wl-summary-buffer-number-list.
	(wl-thread-entity-insert-as-children): Likewise.
	(wl-thread-delete-message): Likewise.
	(wl-meaning-of-mark): Eliminated.
	(wl-thread-next-failure-mark-p): Ditto.
	(wl-thread-entity-get-mark): Ditto.
	(wl-thread-meaning-alist-get-result): Ditto.
	(wl-thread-entity-check-prev-mark): Ditto.
	(wl-thread-entity-check-next-mark): Ditto.
	(wl-thread-entity-check-prev-mark-from-older-brother): Ditto.
	(wl-thread-entity-get-prev-marked-entity): Ditto.
	(wl-thread-get-prev-unread): Ditto.
	(wl-thread-jump-to-prev-unread): Ditto.
	(wl-thread-get-next-unread): Ditto.
	(wl-thread-jump-to-next-unread): Ditto.
	(wl-thread-entity-check-next-mark-from-younger-brother): Ditto.
	(wl-thread-entity-get-next-marked-entity): Ditto.

	* wl-summary.el (wl-summary-buffer-number-list):
	New bufer-local variable.
	(wl-summary-switch-to-clone-buffer): Clone
	`wl-summary-buffer-number-list'.
	(wl-summary-goto-folder-subr): Use `wl-summary-next-message'.
	(wl-summary-cursor-move-regex): Eliminated.
	(wl-summary-cursor-up): Rewrite.
	(wl-summary-cursor-down): Ditto.
	(wl-summary-mode-spec-alist): New variable.
	(wl-summary-next-message): New inline function.
	(wl-summary-cursor-move): New function.
	(wl-summary-default-get-next-msg): Rewrite.
	(wl-summary-sync-all-init): Setup `wl-summary-number-list'.
	(wl-summary-rescan): Ditto.
	(wl-summary-sync-all-init): Ditto.
	(wl-summary-goto-folder-subr): Call `wl-summary-make-number-list' if
	summary is not thread view.
	(wl-summary-sync-update3): Ditto.
	(wl-summary-rescan): Ditto.
	(wl-summary-make-number-list): New function.

	* wl-draft.el: "FCC" -> "Fcc".

	* elmo-version.el (elmo-version): Up to 2.5.8.

	* elmo2.el (elmo-msgdb-list-messages-mark-match): New function.

	* elmo-util.el (elmo-list-insert): New function.