Merge branch 'development' of git+ssh://git.nic.cz/projects/labs/cutedns into development

libknot/nameserver/name-server.c

libknot/packet/packet.c

libknot/packet/packet.h

libknot/updates/xfr-in.c

libknot/zone/zone-contents.c

libknot/zone/zone.c

libknot/zone/zone.h

libknot/zone/zonedb.c

libknot/zone/zonedb.h

src/knot/server/zones.c

src/knot/zone/zone-load.c

src/zcompile/zcompile.c

src/zcompile/zparser.y