MQGMO_* (Get message options structure)

See:

MQGMO_STRUC_ID "GMOb"
MQGMO_STRUC_ID_ARRAY 'G','M','O','b'
MQGMO_VERSION_1 1 X'00000001'
MQGMO_VERSION_2 2 X'00000002'
MQGMO_VERSION_3 3 X'00000003'
MQGMO_CURRENT_VERSION 3 X'00000003'