Extend hardcoded libclang paths to cover {x86_64,aarch64}-{centos7,el9}
I added fallback (hardcoded) paths for libclang for
- aarch64-centos7
- x86_64-el9
- aarch64-el9
In addition to the existing x86_64-centos7.
I'm not sure all versions work, but that's what I have and I hope like this I can get a build on ARM.