OpenSSL 3.0.0 compatibility

[Jonathan Perkin <jperkin%joyent.com@localhost>]

Hey,

With 2021Q4 on the way which I will be maintaining as an LTS release, 
I'd like to get security/openssl bumped to version 3.0.0 at some point 
before the branch so that it remains supported for the lifetime of the 
release, and am also working on upgrading my primary compiler to GCC 
10.3.0.

As you may have seen I've already been fixing some of the easier issues 
with regards to OpenSSL 3.x compatibility, but if anyone else is 
interested in this (I assume NetBSD will also be wanting to upgrade 
sometime soon as 1.1.1 has less than 2 years left), the most recent bulk 
build result is here:

  https://us-east.manta.joyent.com/pkgsrc/public/reports/trunk/bulktest/20210928.1522/meta/report.html

I'm happy to push any work that is considered in-progress to my branch 
for testing, or go ahead and commit to pkgsrc trunk anything that is 
suitable and I'll merge the branch every so often.

Cheers,

--
Jonathan Perkin  -  Joyent, Inc.  -  www.joyent.com