X509_REQ_set_subject_name
X509_REQ_set_subject_name(req, n);
i = X509_REQ_set_subject_name(req, fsubj);
if (!X509_REQ_set_subject_name(req, fsubj)) {
if (!X509_REQ_set_subject_name(ret, X509_get_subject_name(x)))
int X509_REQ_set_subject_name(X509_REQ *req, const X509_NAME *name);