Extended Description

Currently there are no release tarballs for libclc, at least I can't see any under https://github.com/llvm/llvm-project/releases/tag/llvmorg-11.0.0 and https://libclc.llvm.org/ just says you have to clone the monorepo.

Could we have tarballs for libclc alongside with every LLVM release? I know that libclc has a different versioning scheme, but libc++ is also largely backwards-compatible and is still at SO version 1.0. Still we have tarballs for that.