Log Message:
mail/opensmtpd-extras: update package to latest snapshot

The official OpenSMTPD-extras repository is in maintainance mode, but
receives occasional bug fixes. By bringing the package in sync with the
most recent upstream commit, we incorporate a series of fixes and
improvements, with particular regard to the LDAP table.

Hopefully, this is only a temporary solution until a further official
release comes to light.

# Changes (pkgsrc)

* Use PKG_SYSCONFSUBDIR to match mail/opensmtpd configuration.
* Improve the SUBST routine to fix more hard-coded paths, including those
  in man pages.
* Fix a small portability issue in configure script while attempting to
  link against OpenSSL.

# Changes (upstream)

* Inline the only use of tls_handshake_wrapper
* Add AC_USE_SYSTEM_EXTENSIONS
* Mark log.h' fatal and fatalx as noreturn
* Do not hard-code build architecture
* table-ldap:
	- add ldaps support
	- handle more than one result
	- request only required attributes
	- update ber and aldap
	- add example config file
	- fix reconnection logic
	- check if a filter is configured before try to query
	- add netaddr and mailaddrmap support
	- simplify getaddrinfo() usage