Merge branch 'new_tree' into libknot

Knot.files

src/Makefile.am

src/common/general-tree.c

src/common/general-tree.h

src/common/modified_tree.h

src/dnslib/debug.c

src/dnslib/node.c

src/dnslib/node.h

src/dnslib/rrset.c

src/dnslib/tests/dnslib/node_tests.c

src/dnslib/tests/realdata/dnslib/node_tests_realdata.c

src/dnslib/zone-contents.c

src/dnslib/zone-dump-text.c

src/dnslib/zone-dump.c

src/dnslib/zone-load.c

src/dnslib/zonedb.c

src/dnslib/zonedb.h

src/knot/server/name-server.c

src/zcompile/zcompile.c