Update SQL features/conformance information to SQL:2016

Peter Eisentraut <peter@eisentraut.org>

Commit: 037165ca95d854e04c0c28cfa85f1515bd852892
Author: Peter Eisentraut <peter@eisentraut.org>
Date: 2019-05-14T13:44:37Z
Releases: 12.0
Update SQL features/conformance information to SQL:2016

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