cygport upload: patch for openssh 6.8p1

[Yaakov Selkowitz]

On Mon, 2015-06-01 at 04:04 -0400, Andrew Schulman wrote:
> A more precise regex is
> 
>     [0-9a-f]{2}(:[0-9a-f]{2}){15}|SHA256:[A-Za-z0-9+/=]{43}
> 
> I've committed this change to my upload branch at
> https://github.com/andrex-e-schulman/cygport.git.  
> 
> Also in that branch, I've added documentation of the fact that users will need
> to connect to cygwin.com at least one time by sftp before they upload, in order
> to store the host public key in their known_hosts file, as explained in
> https://cygwin.com/ml/cygwin-apps/2015-03/msg00193.html .

Thanks, merged.

--
Yaakov