[compiler-rt] [compiler-rt][cmake] Change orc-rt target names (PR #216901)

[Lang Hames via llvm-commits]

lhames wrote:

> If we also need to change `OrcRTTools` to `CompilerRTOrcRTTools` for consistency, or if another target name is preferred, let me know.

If we do need to rename it then `CompilerRTOrcRTTools` sounds fine to me. We should reserve the cleaner names for the new ORC runtime. I'm hoping the old one will be gone next release cycle.

https://github.com/llvm/llvm-project/pull/216901