- Without this change, references to old and possibly free'd nodes were
  still present.
- Strange that the old version didn't have this problem.

stderr

- Changed fprintf(stderr, ...) to dbg_rrset_detail(...) in
  rrset_dump_function - does not get mixed up in logs.

Conflicts:
	src/knot/ctl/knotc_main.c
	src/knot/ctl/remote.c
	src/knot/ctl/remote.h
	src/tests/knot/rrl_tests.c

This reverts commit f3fba53e.

refs #2137

This was deprecated and unused for a long time,
decision to not log queries was made.

Resulting in max ~ 4000 q/s.

refs #2137

Updated documentation and corrected default settings.

- Wrong if.

- note: Strangely, when done in function that creates the NSEC3 hash, it
  didn't work.

refs #2137

This reverts commit fb6307a3.

- If no MAC was needed, initialization data were present in TSIG RR
- Needs review by MV