Merge branch 'rrsig_timestamps_64bit' into 'master'

src/contrib/time.h

src/knot/dnssec/rrset-sign.c

src/knot/dnssec/zone-sign.c

src/knot/updates/changesets.c

src/knot/zone/zone-dump.c

src/libknot/rrset-dump.c

src/libknot/rrset-dump.h

src/libzscanner/functions.c

src/utils/kdig/kdig_params.c

tests-extra/tests/records/load/data/future.zone

tests-extra/tests/records/load/test.py

tests/libzscanner/data/36_RRSIG.in

tests/libzscanner/data/36_RRSIG.out

tests/libzscanner/processing.c