Code review comment for lp:~gz/bzr/url_unquote_unreserved_842223

One (non random!) failure on PQM:

  bt.test_smart_transport.RemoteHTTPTransportTestCase.test_clone_unnormal_base

Traceback (most recent call last):
  File "/usr/lib/python2.6/dist-packages/testtools/runtest.py", line 144, in _run_user
    return fn(*args)
  File "/usr/lib/python2.6/dist-packages/testtools/testcase.py", line 465, in _run_test_method
    testMethod()
  File "/home/pqm/pqm-workdir/srv/+trunk/bzrlib/tests/test_smart_transport.py", line 3889, in test_clone_unnormal_base
    self.assertEqual('bzr+http://host/%7Ea/b/c/', new_transport.base)
AssertionError: not equal:
a = 'bzr+http://host/%7Ea/b/c/'
b = 'bzr+http://host/~a/b/c/'

Looking into the most sensible way of resolving this.