Sorted iteration is not needed and hhash doesn't support sorted
iteration unless an order index is built.

Should be obsolete now and should work without them.

refs #168

refs #181

CID: 1088834

Coccinelle patch performing most changes included.

There were collisions between types and identifiers causing confusion
for Coccinelle (and probably other tools).

As has been correctly noticed during review, these two functions
were always called together.

refs #4

When happening during reload, there may be some readers.

refs #4

refs #4

- preparation for non-forced zone sing planning
- added a posibility not to wait for readers in changeset application when applying DNSSEC changes upon load/reload (there should be no readers, since the zone is not in the zonedb)
- fixes in changeset merging (SOAs and serials were wrong - SOAs might still be wrong, when me merge the changesets, we do *NOT* want to update the serial, since the user already did that)

Refs #4

- Zones are now automatically (re)signed when server starts/reloads
- Signature validity check now calculates the signature as well - this is used to detect changes to RRs themselves
- 'knotc signzone' issues a force signing of zone - all RRSIGs are dropped and recreated
- Some leaks and bugs still present, but the code is commitable now

Refs #4

Problem was the function is copied from another one which
always decrements the arcount and trims the TSIG RR. But with
aggregated responses, this should be stripped not from first,
but from the packet actually containing the TSIG.

refs #122

refs #109

libknot/dnssec now contains interface for:
- key loading
- low level DNSSEC signing
- NSEC3 hash computation
- SIG(0)
- generating NSEC/NSEC3 records for zones
- generating RRSIG for zones

- connections are generated when NSEC3 nodes are created
- explicitly request node connecting when the zone is loaded or after incoming transfer

Also simplified, cleaned and fixed.

refs #109

refs #109

Refs #102

Refs #102

- Removed some now-unused functions (next_dname..., dnames_apply)
- Added basic comments to some function headers.

Refs #102

 - Code could remove nodes from list, WALK_LIST -> WALK_LIST_DELSAFE

- the 'knot_changes_t' structure used to be created in an extra function, removed, as it is now created together with 'knot_changesets_t' structure.

Refs #89

Refs #102