* wl-mime.el (wl-mime-setup): Added setting for

* wl-mime.el (wl-mime-setup): Added setting for
`mime-setup-signature-key-alist' to avoid overriding key bind for
`wl-draft-send'.

* wl-e21.el (wl-draft-overload-functions): Don't override key binding
for `wl-draft-send'.
* wl-mule.el (wl-draft-overload-functions): Ditto.
* wl-xmas.el (wl-draft-overload-functions): Ditto.
* wl-draft.el (wl-draft-send): Ditto.

* wl-message.el (wl-message-display-internal):
Fixed typo (elmo-fetch-threshold->elmo-message-fetch-threshold).
(Patch is provided by <kita@coe.nttdata.co.jp>).

* elmo.el (elmo-message-fetch-confirm): Fixed docstring.
(Patch is provided by <kita@coe.nttdata.co.jp>).