/brz/remove-bazaar

Really use the transports and test against all targeted protocols.

* test_upload.py:
(TransportAdapter._test_permutations, load_tests): Parametrized
tests by transport.
(TestUpload.test_full_upload, TestUpload.test_incremental_upload,
TestUpload.test_invalid_revspec): Use the transport instead of
cheating by accessing disk behind the scenes.

* __init__.py:
(cmd_upload.upload_full_tree): Use the transport to put the bytes.