Get SSL certificates with PROTOCOL_SSLv23 for maximum compatibility

	Note: Python > 2.7.6 uses PROTOCOL_SSLv23 by default but there are some
	Linux distributions out there which still use older versions. This patch
	mainly addresses such distributions.

src/DOM/HTTPSession.py

@@ -150,7 +150,7 @@ def fetch_ssl_certificate(self, url):
             return
 
         port = _url.port if  _url.port else 443
-        certificate = ssl.get_server_certificate((_url.netloc, port))
+        certificate = ssl.get_server_certificate((_url.netloc, port), ssl_version = ssl.PROTOCOL_SSLv23)
         log.ThugLogging.log_certificate(url, certificate)
 
     def fetch(self, url, method = "GET", window = None, personality = None, headers = {}, body = None):