MQZAD_* (Authority data structure)

See:

MQZAD_STRUC_ID "ZADb"
MQZAD_STRUC_ID_ARRAY 'Z','A','D','b'
MQZAD_VERSION_1 1 X'00000001'
MQZAD_VERSION_2 2 X'00000002'
MQZAD_CURRENT_VERSION 2 X'00000002'