refs #2353

refs #2353

refs #2185

This reverts commit 3c74d0c8.

refs #2185

- 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