News:
- Support for CDS and CDNSKEY record types.

Fixes:
- Maximum dname length check.

fixes #331

CID #1268505

The limit is global, threads are allowed equal portions of the limit.

Journal patches

See merge request !321

Original commits:

6319974e  Merge branch 'dnssec-per-algorithm-single-type-signing' into 'master'
13a040d8  review: fix comments
824457af  fix compatibility with old compilers
e872962e  DNSSEC tests: algorithm dependent Single-Type Signing Scheme
3c54c086  DNSSEC: algorithm dependent Single-Type Signing Scheme

7cf00157  Merge branch 'dnssec-single-type-signing' into 'master'
ae26a394  DNSSEC: single-type signing documentation
41b0aab1  tests-extra: consider single-type signing in dnskey_algorithms
17c77f4c  tests-extra: DNSSEC Single-Type Signing Schema
844b53a3  tests-extra: dnssec-verify, ignore KSK flag setting
db4d4616  DNSSEC: allow Single-Type Signing Scheme
16d2231a  DNSSEC: handle KSK and ZSK independenlty, do not sign DNSKEY with ZSK

Correct detection of journal end position.

4a21001f  Merge branch 'journal_file_end_check' into 'master'
1b07a798  journal: correct file end position detection
fbc46902  tests: journal, added 10x rollover, random item size

refs #309

Original commits:

079427a5  journal: fix possible journal size retrieval race
c329558a  Merge branch 'journal_fsize' into 'master'
4f7b8404  journal: prevent unlimited growth on shrinking/overfill

Reported-by: Philip Paeps

Included changes:

- log warnings properly
- issue warning when FQDN retrieval fails for system.identity and system.nsid
- cache hostname lookup

refs #306

Original commits:

9de0e69e  Merge branch 'conf-hostname-error' into 'master'
7bcf3ff3  log: cache hostname lookup for nsid and identity
9ab4ea4f  log: warn on error retrieving auto value for NSID and identity
3ad605d6  log: update warnings to use cf_warning
87b7676c  conf: added cf_warning API

- Serials are checked during SOA response processing. Incoming
  AXFR should be accepted even if the serial is older. (In order
  to allow forced refersh.)