Since we define the getheader() method on the response from
HTTPConnection, we don't have to call parse_header_string, as the values
will already be converted properly.

Change-Id: Ia81e8674b828b3ff1f014454126b469e41adfc23

Change-Id: I471d3d56d98915804aaf848f7ff98d91f586d572

Fix unicode handling in Python 3 and Python 2. There are currently two
failure modes. In python 2, swiftclient fails to log in debug mode if
the account name has a non-ASCII character. This is because the account
name will appear in the storage URL, which we attempt to pass to the
logger as a byte string (whereas it should be a unicode string). This
patch changes the behavior to convert the path strings into unicode by
calling the parse_header_string() function.

The second failure mode is with Python 3, where http_lib returns headers
that are latin-1 encoded, but swiftclient expects UTF-8. The patch
automatically converts headers from latin-1 (iso-8859-1) to UTF-8, so
that we can properly handle non-ASCII headers in responses.

Change-Id: Ifa7f3d5af71bde8127129f1f8603772d80d063c1

Allows clients to give up on reading the rest of the server response,
if they so choose.

Change-Id: Iccc95b1b5e7d066470966ee0c62a3beb260846e5