[Box Backup] Build under cygwin

[Sitkei Attila]

>Installation instructions are in the readme file.
>
>I was working on creating an installer, but got busy with other projects.
>Perhaps next month.
>  
>

Perhaps OT, but a wondered about the use of win32's `services' in any form
to eliminate the need of login (in a case of e.g. terminal server). 
Thoughts?

Anyways, the binary works as expected, as reported by many, thank you, 
Adrian and Ben.

Yours,

--tef