Changing zone name without changing file name is not handled properly

[oskar456]

If zone name is changed by introducing/changing $ORIGIN directive on the top of the zone file, dzonegit will not properly reconfig nameservers, instead, it will try to reload zone, whose name is not yet known.

Also, when BIND is used, any journal file has to be deleted when changing zone name, otherwise BIND will refuse to load the zone.