eacces_error_get*(): Check and warn if multiple uids/gids have same name.
eacces_error_get*(): Check and warn if multiple uids/gids have same name.

--HG--
branch : HEAD

jkerihuel/dovecot,jkerihuel/dovecot,jkerihuel/dovecot,jwm/dovecot-notmuch,jwm/dovecot-notmuch,jwm/dovecot-notmuch,jkerihuel/dovecot,jwm/dovecot-notmuch,jkerihuel/dovecot,jwm/dovecot-notmuch