Test suite import error on win32 (twisted.conch.test.test_cftp)

[spiv]

From the win32 buildslave:

===============================================================================
IMPORT ERROR:

Could not import twisted.conch.test.test_cftp: 
  File "d:\Program
Files\buildslave\W32-full2.2\Twisted\twisted\trial\runner.py", line 140, in
addModule
    module = reflect.namedModule(module)
  File "d:\Program
Files\buildslave\W32-full2.2\Twisted\twisted\python\reflect.py", line 344, in
namedModule
    topLevel = __import__(name)
  File "d:\Program
Files\buildslave\W32-full2.2\Twisted\twisted\conch\test\test_cftp.py", line 25, in ?
    from test_filetransfer import SFTPTestBase, FileTransferTestAvatar
  File "d:\Program
Files\buildslave\W32-full2.2\Twisted\twisted\conch\test\test_filetransfer.py",
line 46, in ?
    class FileTransferForTestAvatar(unix.SFTPServerForUnixConchUser):
exceptions.AttributeError: 'module' object has no attribute
'SFTPServerForUnixConchUser'

-------------------------------------------------------------------------------

[TimothyFitz]

=============================================================================== [SKIPPED]: twisted.conch.test.test_cftp.TestOurServerBatchFile.testBatchFile

don't run w/o spawnProcess or PyCrypto ===============================================================================