refs #816

- Added functions for checking and getting dname pointer.

refs #816 @0:45

refs #816 @0:45

- Modified the way of iterating through the wire data in packet.
- Changed API of dname_parse_from_wire().
- Added rdata API function rdata_from_wire() (not implemented yet).

refs #816 @1h

- packet_parse_from_wire() implementation.
- Implemented private functions packet_parse_rrs() and
  packet_parse_rr().
- Added some private functions from response.
- add_tmp_rrsets() moved to packet.

refs #816 @2:00

- Not implemented yet.
- Will be used to parse dnames from packet.

refs #816

- Added a lot of missing static functions (copied from old
  response API).
- Fixed some bugs.
- Implemented response_init_from_query().

refs #812 @1:00

- Added function packet_contains().
- Added some missing static function.
- Implemented packet_new().

refs #816 @0:45

- General packet structure and API separated into packet.h/.c.
- Query API separated to query.h/.c.
- Response API separated to response2.h/.c

These structures are not yet used, nor they are added to the
makefile. A lot of functions not yet implemented, just a skeleton.

refs #816 @2:00

Commit refs #799.

Example:
evsched_schedule_cb(server->sched, mycallback, data, 1000); // dt=1s

Commit refs #799.

Commit refs #799.

Commit refs #799.

Scheduler works with the same event type as evqueue_t.

Example:
evsched_t *s = evsched_new();
evsched_schedule_cb(s, myfunc, data, 1000) // Schedule myfunc() after 1000ms
event_t *ev = evsched_next(); // Run event scheduler
evsched_event_free(s, ev); // Free executed event
evsched_delete(s);

Commit refs #799.

- Renamed ns_parse_query() to ns_parse_packet().
- Renamed dnslib_query_t to dnslib_packet_type_t.
- ns_parse_packet() distinguishes between queries and responses.
- Added packet types for responses.

refs #801

refs #782

Commit refs #757.

Implemented proposed format.
To do:
* think of shorter syntax for ACLs

Commit refs #757.

- Added parameter to response_add_rrset_*() functions to set
  dname compression case-sensitivity. (Changed API).
- Propagation of the parameter into all affected private functions.
- Changes in nameserver and response-tests to reflect the changed
  API.
- Changed the example zone file to contain domain names differing
  only in case of characters.

refs #776

- If case-sensitive, do not compare just pointers.

refs #776

- Added new API function.

refs #776

- Added parameter to response_add_opt() which determines if the
  max size will be overriden.

refs #769

- OPT RR adding to normal responses.
- OPT RR adding to AXFR. TODO: must somehow enforce larger packets
  than allowed by the OPT RR.
- Stopping AXFR when any error occurs (do not try to send NSEC3s).
- Real size of AXFR packets should not rewrite the buffer size in
  ns_xfr_t.
- Added a lot of debug output.

- Must retain Question section when clearing for AXFR.

fixes #781

- If both max size and OPT RR are given, the payload in the OPT RR
  cannot be larger than the max size - added check.
- Fixed API of response_add_opt().
- Disabled reallocation in response_add_opt() - larger size in OPT
  RR should not override the max size already set (max size is
  more important).

refs #769

refs #755

XFR handler uses event queue for receiving requests.
Each XFR handler thread asynchronously listens for events like UDP handler.

Commit refs #752.

Commit refs #736.