Merge branch 'cow_trie8' into 'master'

Knot.files

src/contrib/Makefile.inc

src/contrib/semaphore.c

src/contrib/semaphore.h

src/knot/dnssec/nsec-chain.c

src/knot/dnssec/nsec-chain.h

src/knot/dnssec/nsec3-chain.c

src/knot/dnssec/zone-nsec.c

src/knot/dnssec/zone-sign.c

src/knot/events/handlers/expire.c

src/knot/events/handlers/refresh.c

src/knot/journal/journal_basic.c

src/knot/journal/journal_basic.h

src/knot/journal/journal_read.c

src/knot/journal/journal_write.c

src/knot/journal/journal_write.h

src/knot/journal/serialization.c

src/knot/journal/serialization.h

src/knot/modules/onlinesign/onlinesign.c

src/knot/nameserver/axfr.c