packaging: move check-compat-strings.sh to tests/testlib/
Since we're not including contrib/ in pip packages, this test failed when trying to run not from evolve repo.
--HG-- branch : stable
This instance was upgraded to Heptapod 17.7.0rc1 on 2025-01-23
All legacy (hg-git based) Projects will be automatically migrated to native starting with the upgrade of 2025-01-23
Since we're not including contrib/ in pip packages, this test failed when trying to run not from evolve repo.
--HG-- branch : stable