[MERGE] Support for Putty SSH implementation

[Dmitry Vasiliev]

Alexander Belchenko wrote:
> Download and install python interpreter, pywin32 package, and putty.
> And John Meinel says that anyway we need paramiko for work,
> i.e. need to install paramiko and pycrypto.
> 
> Something wrong in this calculation.
> 
> I'm not against your patch if it will works, I'm just want to understand
> some details.

The idea is if you already have python and putty installed you can just 
download the bzr tarball and try it out (even in place) with 'bzr+ssh' urls.

-- 
Dmitry Vasiliev (dima at hlabs.spb.ru)
     http://hlabs.spb.ru