Pysmb

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- Add in support for AMK's Python Cryptography Toolkit which will be used
for DES password hashing. If AMK's pycrypto is found, it will be used
instead of mxCrypto.

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- Fix a bug which fails to close the socket in nmb.py on socket exception
- Fix a bug which fails to close the NetBIOSSession in smb.py if the session
has not been properly established yet.

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- Add new methods to SharedFile instances, get_mtime_epoch, get_atime_epoch
and get_ctime_epoch. These methods will return the mtime, atime and ctime in
epoch time rather than SMB time.
- Remove debugging printout in smb.py which has been released accidentally
with the last release.
- Fix a bug in smbcp which causes to local to remote copy to fail

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- Fix a bug in smb.py which does not return the correct file size for files
with their archive bits turned off. This results in these files not being
retrieved or sent properly.
- Fix some typo error in the documentations

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- Use NT LM0.12 dialect.
- New smb.SMBMachine class
- Add SMB.get_server_domain(), smb.get_server_os(), SMB.get_server_lanman()

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- Fix a problem with some Windows server where an UID is required when server is in share mode.
Now, pysmb calls login() with empty authentication information when server is in share mode.
- Add TYPE_DOMAIN_MASTER constant and description to nmb.py.