Always test only the scripts just under “lib", and just under
child directories which has not the same name script in the upper
level; instead of random sampling from whole libraries.
Related issues
Bug #19872: TestRequireLib#test_thread_size test case is unstable
Added by nobu (Nobuyoshi Nakada) almost 2 years ago
[Bug #19872] Refine TestRequireLib
Always test only the scripts just under “lib", and just under
child directories which has not the same name script in the upper
level; instead of random sampling from whole libraries.