[lld] [LLD][SPARC] Implement enough functionality to run non-trivial 64-bit programs (PR #137919)

[Kirill A. Korinsky via llvm-commits]

catap wrote:

Ok, I will rebase and decmposite it into series of small or at least Atomic by meaning commits.

https://github.com/llvm/llvm-project/pull/137919