Merge remote branch 'origin/development' into ddns

Knot.files

configure.ac

libknot/Makefile.am

libknot/updates/xfr-in.c

libknot/zone/zone-tree.c

m4/ax_check_compiler_flags.m4

m4/ax_ext.m4

m4/ax_gcc_x86_cpuid.m4

src/Makefile.am

src/common/WELL1024a.c

src/common/WELL1024a.h

src/knot/common.h

src/knot/server/notify.c

src/knot/server/udp-handler.c

src/knot/zone/zone-dump.c

src/tests/libknot/libknot/nsec3_tests.c

src/tests/libknot/libknot/zone_tree_tests.c

src/tests/libknot/libknot/zone_tree_tests.h

src/tests/libknot/realdata/libknot/packet_tests_realdata.c

src/tests/libknot/realdata/libknot/response_tests_realdata.c