Mention that BIND should not abort anymore when trying to connect to a
remote server via TLS when using an incorrect 'tls' configuration.
+6348. [bug] BIND could previously abort when trying to
+ establish a connection to a remote server using an
+ incorrect 'tls' configuration. That has been
+ fixed. Thanks to Tobias Wolter for bringing
+ the issue to our attention. [GL #4572]
+
6347. [func] Disallow stale-answer-client-timeout non-zero values.
[GL #4447]