Pysmb

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- Add support for encrypted authentication using DES
- Fix a bug(?) which treats all services and filenames as case-sensitive

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- Fix a bug in smblistshare and smbdu which fails to catch the nmb.NetBIOSError raised when session
setup fails.
- Fix a bug in smb.SMB that arises from the change in nmb.NetBIOSSession which sends
the session port number as the remote host type.

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- Fix a bug in nmb.NetBIOSSession which specifies a TYPE_WORKSTATION for remote host instead of TYPE_SERVER.
- Minor change to nmb.NetBIOSSession constructor API.
- Fix a bug in smbdu which raises OverflowError when printing long file size values.
- Fix a bug in smbcp which does not handle the destination path correctly when
the source file is copied to a different filename.

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- Change nmb's NetBIOS and NetBIOSSession class such that they raise a NetBIOSError
with a tuple of ( err_msg, err_class, err_code )
- Add a function strerror() in both smb and nmb to return human readable messages
for error codes.
- Fix a bug in smbcp which fails to print an error message and terminate when the
remote source path is not found.
- Add in another utility, smblistshare.

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- First public release