Forces a transaction state change for a transaction in which
    there is at least one RM participant that has specified the
    DDTM$M_COORDINATOR flag.

    $TRANS_EVENTW always waits for the request to complete before
    returning to the caller. Other than this, it is identical to
    $TRANS_EVENT.

    Format

      SYS$TRANS_EVENTW  [efn] ,[flags] ,iosb ,[astadr] ,[astprm] ,tid

                        ,rm_id ,tx_event

    C Prototype

      int sys$trans_eventw  (unsigned int efn, unsigned int

                            flags, struct _iosb *iosb, void

                            (*astadr)(__unknown_params), __int64

                            astprm, )