Conflicts:
	src/knot/nameserver/axfr.c

contexts.

- Also removed knot_ from changesets

Conflicts:
	src/knot/nameserver/process_answer.c

- File xfr-in.c-> apply.c
- Removed obsolete API functions
- Doxygen and fuction reoraganization.

ref #209

ref #209

ref #209

This prevents problems when sharing/reusing the address bytes.

Zero-length msg_namelen prevents this.

 - Simpler DDNS signing, simpler changeset merging (todo: fix leaks)
 - Removed some needles helper functions and zone adjusting

Conflicts:
	src/knot/server/zones.c
	src/knot/server/zones.h
	src/knot/updates/xfr-in.c
	src/knot/zone/contents.c
	src/knot/zone/contents.h
	src/knot/zone/zone-dump.c
	src/knot/zone/zone-dump.h
	src/knot/zone/zonefile.c
	tests/process_query.c

Ttl Tests