mod_log_config.c: Use iovecs to write the log line to eliminate a memcpy

                           apr_size_t len)

{

    char *str;

    char *s;

    int i;

    apr_status_t rv;

    struct iovec *vec;

    str = apr_palloc(r->pool, len + 1);

    vec = apr_palloc(r->pool, nelts * sizeof(struct iovec));

    for (i = 0, s = str; i < nelts; ++i) {

        memcpy(s, strs[i], strl[i]);

        s += strl[i];

    for (i = 0; i < nelts; ++i) {

        vec[i].iov_base = strs[i];

        vec[i].iov_len = strl[i];

    }

    rv = apr_file_write((apr_file_t*)handle, str, &len);

    rv = apr_file_writev((apr_file_t*)handle, vec, nelts, &i);

    return rv;

}