Fixed the semantic of timeout for socket.create_connection and
all the upper level libraries that use it, including urllib2.
Added and fixed some tests, and changed docs correspondingly.
Thanks to John J Lee for the patch and the pusing, :)
diff --git a/Lib/httplib.py b/Lib/httplib.py
index 5696467..1bca5da 100644
--- a/Lib/httplib.py
+++ b/Lib/httplib.py
@@ -639,7 +639,8 @@
     debuglevel = 0
     strict = 0
 
-    def __init__(self, host, port=None, strict=None, timeout=None):
+    def __init__(self, host, port=None, strict=None,
+                 timeout=socket._GLOBAL_DEFAULT_TIMEOUT):
         self.timeout = timeout
         self.sock = None
         self._buffer = []
@@ -1055,7 +1056,7 @@
         default_port = HTTPS_PORT
 
         def __init__(self, host, port=None, key_file=None, cert_file=None,
-                     strict=None, timeout=None):
+                     strict=None, timeout=socket._GLOBAL_DEFAULT_TIMEOUT):
             HTTPConnection.__init__(self, host, port, strict, timeout)
             self.key_file = key_file
             self.cert_file = cert_file