Try to simply lit config file generation by adding standalone fedora specific
config file. In the future, when we need to customize the lit config
for the llvm-test package, we can just update lit.fedora.cfg.py rather
than trying to patch the default config from the spec file.
This patch also makes the run-lit-tests script identical on all arches,
so it will no longer cause multi-lib conflicts.
- Add some missing Requires
- Add --threads option to run-lit-tests script
- Set PATH so lit can find tools like count, not, etc.
- Don't hardcode tools directory to /usr/lib64/llvm
- Fix typo in yaml-bench define
- Only print information about failing tests
- Run tests in CI with only 1 thread
