Update to latest versions of PostgreSQL

The PostgreSQL Global Development Group has released an update to all supported
versions of our database system, including 10.1, 9.6.6, 9.5.10, 9.4.15, 9.3.20,
and 9.2.24. This release fixes three security issues. This release also fixes
issues found in BRIN indexing, logical replication and other bugs reported over
the past three months.

Please note that the CVE-2017-12172 does not affect the FreeBSD port unless you
decided to not use the contrib/startscript instead of the startscript
distributed with the FreeBSD port/package.

Security: CVE-2017-12172, CVE-2017-15099, CVE-2017-15098
URL: https://www.postgresql.org/about/news/1801/