Evan Hunt authored Mar 05, 2021 and Michal Nowak committed Mar 06, 2021

- silence out of range errors from dns_journal_compact() when serial == 0;
  just start from the beginning of the journal.
- add the starting and ending serial number from the journal header to
  the output of dns_journal_print().
- use a value less than 2^32 for DNS_ZONEFLG_FIXJOURNAL; a larger value
  could cause problems in some build environments.

(cherry picked from commit ffa7e3ab)