help use mq posix

[shirleyquirk]

`mqd_t = mq_open(QUEUE_NAME,O_CREAT or O_RDWR,0o644,null) #or mqd_a.mq_maxnmsg 
= 10 mqd_t = mq_open(QUEUE_NAME,O_CREAT or O_RDWR,0o644,mqd_a.addr) `

Run