MEDIUM: log: report SSL ciphers and version in logs using logformat %sslc/%sslv

These two new log-format tags report the SSL protocol version (%sslv) and the
SSL ciphers (%sslc) used for the connection with the client. For instance, to
append these information just after the client's IP/port address information
on an HTTP log line, use the following configuration :

    log-format %Ci:%Cp\ %sslv:%sslc\ [%t]\ %ft\ %b/%s\ %Tq/%Tw/%Tc/%Tr/%Tt\ %st\ %B\ %cc\ \ %cs\ %tsc\ %ac/%fc/%bc/%sc/%rc\ %sq/%bq\ %hr\ %hs\ %{+Q}r

It will report a line such as the following one :

    Oct 12 20:47:30 haproxy[9643]: 127.0.0.1:43602 TLSv1:AES-SHA [12/Oct/2012:20:47:30.303] stick2~ stick2/s1 7/0/12/0/19 200 145 - - ---- 0/0/0/0/0 0/0 "GET /?t=0 HTTP/1.0"
diff --git a/include/types/log.h b/include/types/log.h
index 70dc9fa..8c28310 100644
--- a/include/types/log.h
+++ b/include/types/log.h
@@ -91,6 +91,8 @@
 	LOG_FMT_REQ,
 	LOG_FMT_HOSTNAME,
 	LOG_FMT_UNIQUEID,
+	LOG_FMT_SSL_CIPHER,
+	LOG_FMT_SSL_VERSION,
 };
 
 /* enum for parse_logformat */