m_ssl_openssl: Allow disabling SSLv3 via the config

data/modules.example.conf

@@ -620,6 +620,14 @@ module { name = "help" }
 	 */
 	cert = "data/anope.crt"
 	key = "data/anope.key"
+
+	/*
+	 * As of 2014 SSL 3.0 is considered insecure, but it might be enabled
+	 * on some systems by default for compatibility reasons.
+	 * You can use the following option to enable or disable it explicitly.
+	 * Leaving this option not set defaults to the default system behavior.
+	 */
+	#sslv3 = no
 }
 
 /*