Update the .dir-locals.el for libtest [v9.18]
The tests/libtest directory is missing from the .dir-locals.el, so the emacs flycheck would not work for the unit tests. Add it to the configuration.
Backport of !6565 (merged)
The tests/libtest directory is missing from the .dir-locals.el, so the emacs flycheck would not work for the unit tests. Add it to the configuration.
Backport of !6565 (merged)