Bug#1000495: openssh: drop the advertisement clause in BSD license

On Wed, Nov 24, 2021 at 01:50:01PM +0530, Ritesh Raj Sarraf wrote:
> Niels gave his explicit permission to drop clause 3, the "advertising" clause, from his code.
> This restores the GPL compatibility.
> 
> Request if the same can be updated in this package.
> 
> References:
> * https://github.com/pyca/bcrypt/pull/170
> * https://github.com/pyca/bcrypt/files/3081054/Blowfish-cypher-license-change.pdf

Regardless of what permission Niels has given, I can't unilaterally
change it in Debian's OpenSSH packaging; it needs to be updated upstream
first.  Please file a bug at bugzilla.mindrot.org about this and mark
this bug as forwarded (I don't think it makes sense for me to be in the
middle here).