Journal content
This allows three journal modes:
- no journal: just zonefile used (if none, bootstrap)
- standard journal: just changesets, depending on zonefile
- zone-in-journal: zone is loaded from journal
This obsoletes configuration options: zone/ixfr-from-differences, zone/zone-in-journal
Documentation is updated; coverage by python tests is granted by ixfr/axfr_style and axfr/zone-in-journal.
Load event is completely rewritten.
Also fixes several journal-related minor bugs observed in special cases.
Edited by Daniel Salzman