[clang] [llvm] [Clang-Repl] Add support for out-of-process execution. (PR #110418)

[Paul Osmialowski via cfe-commits]

pawosm-arm wrote:

Ah, so it isn't failing only for me. Apparently, it blows away all the environments where ORC is deliberately disabled.

https://github.com/llvm/llvm-project/pull/110418