Convert `non_null` into `non_nullifier`
Convert `non_null` into `non_nullifier`

Change-Id: Ic5ec331588fa232f51f3fb5c5ee6e5c6045820c7

apmasell/flabbergast,apmasell/flabbergast,apmasell/flabbergast,flabbergast-config/flabbergast,flabbergast-config/flabbergast,apmasell/flabbergast,apmasell/flabbergast,apmasell/flabbergast,flabbergast-config/flabbergast,flabbergast-config/flabbergast,flabbergast-config/flabbergast