refs #2192 4h

fixes #2174

Not so slow with large number of zones now.

refs #2174, #2204

fixes #2182

refs #2176

Unsigned short is sufficient to store maximal number 256.

refs #1291 @5m

refs #1130

refs #1130

refs #937

refs #937

refs #937

- Functions for getting DS digest type and length from RDATA.
- Function for checking DS RDATA (compares the digest length with
  the expected length).
- Added constants for DS digest types and DNSSEC algorithm types
  (the latter is not used yet).
- Function for getting expected DS digest length.
- Modified adjusting functions to check the DS RDATA. Most of the
  function were modified to return some value.

refs #2050 @1h40m

refs #2137 @4h

Conflicts:
	src/knotc.8

refs #2035

The reason was the rdata_base32_to_string must return string terminated with 0.
New implementation of Base32hex doesn't do that. So additional termination was
added.

refs #2137 @2h

refs #2137 @1h

fixes #2088

Conflicts:
	src/knot/server/zones.h

fixes #2088

Applies when no TSIG is configured for update-in
on given slave zone.

refs #1130

fixes #2145

refs #1130

refs #2035

Old implementations were second party code uder GPL licence. New implementations
have clearer interface, should be faster and can be published under BSD licence
in the future.

refs #2137 @24h

refs #2035

refs #2035