configure: Allow --with-linux-quota=n to be only 1 or 2.
configure: Allow --with-linux-quota=n to be only 1 or 2.

LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot