Tarballs are untested in CI

[SpamapS]

As important as building from git is, the gold standard for portability and release artifacts is still tarballs, I think. Maybe I'm wrong? Anyway, if we are going to keep releasing via tarball and not just git tag, we should build a tarball in CI.

It would be helpful if users could let us know if they use the tarballs in any way.

[esabol]

Yeah, makes sense. I'm pretty sure most people build from the release tarball if they are compiling gearmand at all. These days, most folks apt-get install (or equivalent) whatever package is provided for their system, I presume, but those packages track our release tarballs, not the git repository.

Adapting the GitHub Actions CI workflow to generate a tarball and then build and test that tarball sounds tricky, but I might be overthinking it.