Allocates an OpenVMS Galaxy lock block from a lock table created
    with the $CREATE_GALAXY_LOCK_TABLE service.

    Note that this system service is supported only in an OpenVMS
    Alpha Galaxy environment.

    For more information about programming with OpenVMS Galaxy system
    services, see the VSI OpenVMS Alpha Partitioning and Galaxy Guide.

    Format

      SYS$CREATE_GALAXY_LOCK  lcktbl_handle ,name ,size ,timeout ,ipl

                              ,rank ,handle

    C Prototype

      int sys$create_galaxy_lock  (unsigned int lcktbl_handle, void

                                  *name, unsigned int size, unsigned

                                  int timeout, unsigned int ipl,

                                  unsigned int rank, unsigned __int64

                                  *lock_handle);