Simplify recvmmsg/sendmmsg detection

See merge request !589

internet: add glue for delegated servers if authoritative answer

See merge request !588

It used quadratic time in the number of RRs; now it's linear.

Robert Edmonds authored 8 years ago and Daniel Salzman committed 8 years ago

This commit adds two new boolean options to the dnstap module
configuration.

"log-queries" and "log-responses" independently control whether query
messages and response messages will be logged, respectively. They both
default to "on", which matches the behavior of previous versions of
Knot.

This provides similar functionality to BIND and Unbound, whose dnstap
implementations offer control over which types of messages are logged by
dnstap.

libknot/rdataset: add knot_rdataset_gather()

It's needed for https://gitlab.labs.nic.cz/knot/resolver/issues/93

Note: this will require libknot soname bump when the next release happens. https://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html

See merge request !584