I wrote an email to the HPC-SSH team and got the following response:
> I'm at a conference this week so I'll make the license more clear next week in the repo. Basically, it's a very lax bsd style license. Maintain attribution and you can do as you like with it. However, please understand that when incorporated into OpenSSH the OpenSSH license takes precedence.
> Also out had been submitted some years ago but there was resistance to the patch for non technical reasons so I've home my own way on it.
> I'm at a conference this week so I'll make the license more clear next week in the repo. Basically, it's a very lax bsd style license. Maintain attribution and you can do as you like with it. However, please understand that when incorporated into OpenSSH the OpenSSH license takes precedence.
> Also out had been submitted some years ago but there was resistance to the patch for non technical reasons so I've home my own way on it.
> Chris