
Since SSL compression is no longer recommended, turn the default in libpq from on to off. OpenSSL 1.1.0 and many distribution packages already turn compression off by default, so such a server won't accept compression anyway. So this will mainly affect users of older OpenSSL installations. Also update the documentation to make clear that this setting is no longer recommended. Discussion: https://www.postgresql.org/message-id/flat/595cf3b1-4ffe-7f05-6f72-f72b7afa7993%402ndquadrant.com