refs #1912

refs #1688

Old: [AI]XFR of 'ZONE/(IN|OUT)' ...
New: (Incoming|Outgoing) [AI]XFR of 'ZONE' ...

refs #1912

refs #1912

refs #1912

refs #1912

Conflicts:
	src/common/dynamic-array.c
	src/knot/server/zones.c

TODO: Use the new functions in all possible cases, there are more
      possible, mostly where ns_error_response() is now used.

refs #1918 @1h

refs #1918 @20m

refs #1918 @15m

Use emacs C-u M-x texinfo-multiple-files-update to update menus and nodes
http://www.gnu.org/software/texinfo/manual/texinfo/texinfo.html#texinfo_002dmultiple_002dfiles_002dupdate

- Now should be finally correct. If there is less or more data
  than expected, the packet is treated as malformed.

refs #1910 @1.5h

- If there is no such RRSet in the node, do not try to copy it.

refs #1343 @20m

refs #1343 @30m

- Changed check to decide whether to parse rest or not.
  Hopefully this does not break other cases.

- Not finished yet!

refs #1343 @15m

refs #1343 @15m

refs #1343 @15m

refs #1380 @10m

refs #1320 @50m

refs #1320 @1h

refs #1688 @15m