(get-membership-old): Added error code bad-bool.

(login): Ditto.
(re-z-lookup): Ditto.
(lookup-z-name): Ditto.
(who-is-on-dynamic): Ditto.
(get-membership-10): Ditto.
(query-read-texts): Ditto.
(get-membership): Ditto.
(set-connection-time-format): Ditto.
(Error Codes): Document error code bad-bool.
(Protocol Version History): Mention bad-bool.
(Document Edition History): Mention bad-bool.