mrd_startup - Open a medium-changer robot

    mrd_shutdown - Close a medium-changer robot

    Windows NT         mrd.dll
    UNIX               /usr/lib/libmrd.a
    OpenVMS            MRD$RTL.EXE

    #include <mrd_common.h>
    #include <mrd_message.h>

    int mrd_startup(
        const char   *robot_name,
        robot_info_t *robot_info,
        char         *log_info) ;

    void mrd_shutdown(
        robot_info_t *robot_info) ;