* wl-nemacs.el (wl-draft-overload-functions): Set

* wl-nemacs.el (wl-draft-overload-functions): Set
`mode-line-buffer-identification' instead of using
`wl-make-modeline'.

* wl.el (wl-plugged-mode): Set `mode-line-buffer-identification'
instead	of using `wl-make-modeline'.

* wl-xmas.el (wl-plugged-init-icons): Set up
`wl-plug-state-indicator-on' and `wl-plug-state-indicator-off'.
(wl-make-modeline): Abolish.
(wl-draft-overload-functions): Set
`mode-line-buffer-identification' instead of using
`wl-make-modeline'.

* wl-util.el (wl-make-modeline-subr): Abolish.
(wl-mode-line-buffer-identification): New alias.

* wl-summary.el (wl-summary-buffer-folder-indicator): New.
(wl-summary-make-modeline): Abolish.
(wl-summary-buffer-set-folder): Set
`wl-summary-buffer-folder-indicator'.
(wl-summary-mode): Set `mode-line-buffer-identification' instead
of using `wl-make-modeline'.
(wl-summary-switch-to-clone-buffer): Don't set
`mode-line-buffer-identification'.
(wl-summary-goto-folder-subr): Ditto.

* wl-mule.el (wl-draft-overload-functions): Set
`mode-line-buffer-identification' instead of using
`wl-make-modeline'.

* wl-folder.el (wl-folder-mode): Set
`mode-line-buffer-identification' instead of using
`wl-make-modeline'.
(wl-folder): Don't set `mode-line-buffer-identification'.