Rebuild for abseil_cpp202206230 (redux²)

[h-vetinari]

Rehash of #108 (with less thrashing), continuation of #107

Closes #107

[conda-forge-linter]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe) and found it was in an excellent condition.

[h-vetinari]

@coryan PTAL
This is a slimmed down version of #107 (also on C++17). I'll try another PR just for the shared builds, but just for the purpose of progressing on abseil, we should be good now. :)

[coryan]

@h-vetinari thanks and welcome.

[h-vetinari]

@h-vetinari thanks and welcome.

Thank you too for the helpful inputs & quick reviews! :)

PS. I usually try to have pretty clean commit histories, and I think it's better in such cases not to squash. For example, we'll have to revert (morally) 1eb18c8 at some point, and generally having a richer history helps navigating (IMO) how the recipe evolved (in particular, mixing bot commits with "recipe-only" commits makes this harder).