symbols-in-versions: add the new TLSAUTH-SRP symbols

docs/libcurl/symbols-in-versions

@@ -123,6 +123,7 @@ CURLE_TFTP_NOSUCHUSER           7.15.0
 CURLE_TFTP_NOTFOUND             7.15.0
 CURLE_TFTP_PERM                 7.15.0
 CURLE_TFTP_UNKNOWNID            7.15.0
+CURLE_TLSAUTH_FAILED            7.21.4
 CURLE_TOO_MANY_REDIRECTS        7.5
 CURLE_UNKNOWN_TELNET_OPTION     7.7
 CURLE_UNSUPPORTED_PROTOCOL      7.1
@@ -484,6 +485,9 @@ CURLOPT_TIMECONDITION           7.1
 CURLOPT_TIMEOUT                 7.1
 CURLOPT_TIMEOUT_MS              7.16.2
 CURLOPT_TIMEVALUE               7.1
+CURLOPT_TLSAUTH_PASSWORD        7.21.4
+CURLOPT_TLSAUTH_TYPE            7.21.4
+CURLOPT_TLSAUTH_USERNAME        7.21.4
 CURLOPT_TRANSFERTEXT            7.11.1
 CURLOPT_UNRESTRICTED_AUTH       7.10.4
 CURLOPT_UPLOAD                  7.1
@@ -650,6 +654,8 @@ CURL_TIMECOND_IFMODSINCE        7.9.7
 CURL_TIMECOND_IFUNMODSINCE      7.9.7
 CURL_TIMECOND_LASTMOD           7.9.7
 CURL_TIMECOND_NONE              7.9.7
+CURL_TLSAUTH_NONE               7.21.4
+CURL_TLSAUTH_SRP                7.21.4
 CURL_VERSION_ASYNCHDNS          7.10.7
 CURL_VERSION_CONV               7.15.4
 CURL_VERSION_CURLDEBUG          7.19.6
@@ -664,4 +670,5 @@ CURL_VERSION_NTLM               7.10.6
 CURL_VERSION_SPNEGO             7.10.8
 CURL_VERSION_SSL                7.10
 CURL_VERSION_SSPI               7.13.2
+CURL_VERSION_TLSAUTH_SRP        7.21.4
 CURL_WRITEFUNC_PAUSE            7.18.0