* wl-summary.el (wl-summary-default-from): Use

* wl-summary.el (wl-summary-default-from): Use
wl-address-header-extract-address instead of std11-extract-address-components.
(wl-summary-simple-from): Ditto.
(wl-summary-goto-folder-subr): Check wl-summary-cache-use.
(wl-summary-insert-headers): Show message.
(wl-summary-create-line): Set 4th argument of wl-set-string-width
for whole line.

* wl-util.el (wl-set-string-width): Added 4th argument ignore-invalid;
Don't call itself recursively (Adviced by Yamaoka-san).