Merge remote branch 'origin/pollapi' into axfr-in

Knot.files

configure.ac

libknot/nameserver/name-server.c

libknot/nameserver/name-server.h

src/Makefile.am

src/common/acl.c

src/common/evsched.c

src/common/fdset.c

src/common/fdset.h

src/common/fdset_epoll.c

src/common/fdset_poll.c

src/common/lists.c

src/common/sockaddr.c

src/knot/main.c

src/knot/server/server.c

src/knot/server/tcp-handler.c

src/knot/server/tcp-handler.h

src/knot/server/xfr-handler.c

src/knot/server/xfr-handler.h

src/knot/server/zones.c