Add define for used type of third argument to 'accept' - Netware uses size_t

// Check type of third arg to accept

#if defined(__hpux)

// HPUX doesn't use socklent_t for third parameter to accept

// HPUX uses int* for third parameter to accept

    typedef int*       ACCEPT_THIRD_T;

#elif defined(__NETWARE__)

// NetWare uses size_t* for third parameter to accept

    typedef size_t*       ACCEPT_THIRD_T;

#else

    typedef socklen_t* ACCEPT_THIRD_T;

#endif