Support converting cipher name to RFC name and vice versa

Fixes: issue #3747

make SSL_CIPHER_standard_name globally available and introduce a new
function OPENSSL_cipher_name.

A new option '-convert' is also added to 'openssl ciphers' app.

Documentation and test cases are added.

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/3859)

ssl/statem/statem_clnt.c

diff --git a/ssl/statem/statem_clnt.c b/ssl/statem/statem_clnt.c
index cef0df8..1e96022 100644
--- a/ssl/statem/statem_clnt.c
+++ b/ssl/statem/statem_clnt.c
@@ -3568,7 +3568,7 @@
     if (totlen != 0) {
         if (empty_reneg_info_scsv) {
             static SSL_CIPHER scsv = {
-                0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
+                0, NULL, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
             };
             if (!s->method->put_cipher_by_char(&scsv, pkt, &len)) {
                 SSLerr(SSL_F_SSL_CIPHER_LIST_TO_BYTES, ERR_R_INTERNAL_ERROR);
@@ -3577,7 +3577,7 @@
         }
         if (s->mode & SSL_MODE_SEND_FALLBACK_SCSV) {
             static SSL_CIPHER scsv = {
-                0, NULL, SSL3_CK_FALLBACK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
+                0, NULL, NULL, SSL3_CK_FALLBACK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
             };
             if (!s->method->put_cipher_by_char(&scsv, pkt, &len)) {
                 SSLerr(SSL_F_SSL_CIPHER_LIST_TO_BYTES, ERR_R_INTERNAL_ERROR);