Backporting Stribog fix to 1.8.x

[Jussi Kivilinna]

On 24.5.2019 16.09, Werner Koch wrote:
> On Thu, 23 May 2019 21:12, dbaryshkov at gmail.com said:
> 
>> Not the public ones. AltLinux developers are working on GnuPG fork
>> which supports GOST S/MIME and GOST OpenPGP support. Other
>> developers are supporting Kleopatra patches for GOST support.
> 
> Does that mean they would anyway patch Libgcrypt?
> 
> Jussi: Do you think it is okay to backport tghe fix?

Yes, it would be ok to backport the fix. I'm a bit concerned about
potential breakage for users but that is going to happen with 1.9
anyway and if needed we can add bug-emu flag for Stribog to support
the broken algorithm variant.

-Jussi