document use of CHECK_KEYSERVER variable in monkeysphere-authentication
monkeysphere-authentication uses the CHECK_KEYSERVER configuration variable to determine keyserver checking policy (just as all monkeysphere commands do, since they all use the gpg_fetch_userid function). However, this variable is not documented in the monkeysphere-authentication man page. We should also check what comments are present about this variable in the monkeysphere-authentication.conf file as well.
(from redmine: created on 2010-10-21, closed on 2010-10-26)