Avoid tests that make no sense, because m4 is single-threaded.

* m4/gnulib-cache.m4: Avoid lock-tests and tls-tests.

Signed-off-by: Eric Blake <ebb9@byu.net>
(cherry picked from commit 2e16f59fdc15cace7c60960035f0d8fecd6232af)
2 files changed