Add SSL_OP_NO_RENEGOTIATION

Since |ssl_renegotiate_never| is the default, this option is moot.
However, OpenSSL defines and supports it so this helps code that wishes
to support both.

Change-Id: I3a2f6e93a078d39526d10f9cd0a990953bd45825
Reviewed-on: https://boringssl-review.googlesource.com/c/34384
Reviewed-by: Adam Langley <alangley@gmail.com>
Commit-Queue: Adam Langley <alangley@gmail.com>

include/openssl/ssl.h

diff --git a/include/openssl/ssl.h b/include/openssl/ssl.h
index 59b9eac..c107cbd 100644
--- a/include/openssl/ssl.h
+++ b/include/openssl/ssl.h
@@ -4147,6 +4147,7 @@
 #define SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG 0
 #define SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG 0
 #define SSL_OP_NO_COMPRESSION 0
+#define SSL_OP_NO_RENEGOTIATION 0  // ssl_renegotiate_never is the default
 #define SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION 0
 #define SSL_OP_NO_SSLv2 0
 #define SSL_OP_NO_SSLv3 0