zones_strict_data (-S) and zones_strict_startup (-s)

New option 'zones_strict_data' is similar in nature to the old
  'strict_data' option, in that it upgrades mere warnings about zone
  data anomalies into full errors.  Defaults false (previous behavior).

The option 'zones_rfc1035_strict_startup' was deprecated and renamed
  to 'zones_strict_startup', as the same basic principle should apply
  to other sources.  No functional change, since rfc1035 is still
  the only viable zone data source.  Still defaults true.

Two commandline options added (-s and -S) to force these settings to
  true while ignoring any default or setting from the config file.
  This is mostly useful for checkconfig, but could have other uses.