* canlock.el (canlock-sha1-function): Remove.

* canlock.el (canlock-sha1-function): Remove.
(canlock-sha1-function-for-verify): Remove.
(canlock-openssl-program): Remove.
(canlock-openssl-args): Remove.
(canlock-ignore-errors): Remove.
(canlock-sha1-with-openssl): Remove.
(canlock-sha1): Use sha1 instead of to call canlock-sha1-function.
(canlock-verify): Don't use canlock-ignore-errors.

* sha1-el.el (sha1-string-external): Make it can return a string
 in binary form.
(sha1-region-external): Ditto.
(sha1-string-internal): Ditto.
(sha1-region-internal): Ditto.
(sha1-region): Ditto.
(sha1-string): Ditto.
(sha1): Ditto.