Log Message:
Update "milter-greylist" package to version 4.2rc1.
Changes since version 4.0.1:
- SpamAssassassin support
- Native LDAP support via OpenLDAP (off by default in pkgsrc)
- DKIM support (not supported in pkgsrc)
- P0f support
- A lot of bug fixes

pkgsrc related changes:
- Optional "curl" support for external URL checking