Fix thishost helper funtion in urllib. Returns the ipaddress of localhost when

hostname is resolvable by socket.gethostname for local machine. This all fixes
certain freebsd builtbot failures.

Lib/urllib/request.py

@@ -2229,7 +2229,10 @@ def thishost():
     """Return the IP addresses of the current host."""
     global _thishost
     if _thishost is None:
-        _thishost = tuple(socket.gethostbyname_ex(socket.gethostname())[2])
+        try:
+            _thishost = tuple(socket.gethostbyname_ex(socket.gethostname())[2])
+        except socket.gaierror:
+            _thishost = tuple(socket.gethostbyname_ex('localhost')[2])
     return _thishost
 
 _ftperrors = None