* doc/wl-ja.texi, doc/wl.texi: Fixed description of wl-draft-use-cache.

* doc/wl-ja.texi, doc/wl.texi: Fixed description of wl-draft-use-cache.
(Pointed out by Yoichi NAKAYAMA <yoichi@eken.phys.nagoya-u.ac.jp>)

* wl-vars.el (wl): Set custom-manual link as "wl-ja"
only if current language environment is japanese,

* wl-folder.el (wl-folder-jump-to-current-entity): Call
wl-folder-select-buffer when wl-summary-use-frame is non-nil.
(wl-folder-goto-folder-subr): Ditto.

* wl-draft.el (wl-draft-dispatch-message): Call `elmo-file-cache-get-path'.