~bzr-pqm/bzr/bzr.dev

Fix bug #265070 by providing a finer sieve for accepted redirections.

* bzrlib/transport/http/_urllib.py:
(HttpTransport_urllib.__init__): Provides the implementation name.

* bzrlib/transport/http/_pycurl.py:
(PyCurlTransport.__init__): Provides the implementation name.

* bzrlib/transport/http/__init__.py:
(HttpTransportBase.__init__): Make the implementation a mandatory
parameter.
(HttpTransportBase._redirected_to.relpath): We need a dedicated
relpath method to be able to cope with slight differences between
the url sent and the url received from the server.
(HttpTransportBase._redirected_to): Fix bug #265070 by accepting
more redirection kinds and handling them: http <-> https and user
specified in the url.

* bzrlib/tests/test_http.py:
(Test_redirected_to): More complete tests for _redirected_to().