* wl-util.el (wl-regexp-opt): Define as an alias for elmo-regexp-opt.

* wl-util.el (wl-regexp-opt): Define as an alias for elmo-regexp-opt.

* wl-thread.el (wl-thread-open-all-unread): Use
elmo-folder-list-flagged instead of
elmo-folder-list-messages-mark-match.

* wl-summary.el (wl-summary-sync-marks): Use elmo-folder-list-flagged
instead of elmo-folder-list-messages-mark-match.
(wl-summary-move-spec-alist): New variable.
(wl-summary-move-spec-plugged-alist,
wl-summary-move-spec-unplugged-alist): Abolish.
(wl-summary-next-message): Follow the change above.
(wl-summary-save-view-cache): Call wl-summary-delete-all-temp-marks
with 'no-msg' argument.

* wl-message.el (wl-message-buffer-prefetch-move-spec-alist): New
variable.
(wl-message-buffer-prefetch-move-spec-plugged-alist,
wl-message-buffer-prefetch-move-spec-unplugged-alist): Abolish.
(wl-message-buffer-prefetch-get-next): Follow the change above.