MQPMO_* (Put message options structure)

See:

MQPMO_STRUC_ID "PMOb"
MQPMO_STRUC_ID_ARRAY 'P','M','O','b'
MQPMO_VERSION_1 1 X'00000001'
MQPMO_CURRENT_VERSION (variable)
MQPMO_VERSION_2 2 X'00000002'
MQPMO_CURRENT_LENGTH (variable)