[clang] [Clang-Repl] Sinking RemoteJITUtils into Interpreter class(Refactoring) (PR #155140)

[Vassil Vassilev via cfe-commits]

================
@@ -347,20 +348,118 @@ const char *const Runtimes = R"(
   EXTERN_C void __clang_Interpreter_SetValueNoAlloc(void *This, void *OutVal, void *OpaqueType, ...);
 )";
 
+#ifndef _WIN32
+llvm::Expected<std::pair<std::unique_ptr<llvm::orc::LLJITBuilder>, pid_t>>
+Interpreter::outOfProcessJITBuilder(OutOfProcessJITConfig OutOfProcessConfig) {
+  std::unique_ptr<llvm::orc::ExecutorProcessControl> EPC;
+  pid_t childPid = -1;
+  if (OutOfProcessConfig.OOPExecutor != "") {
----------------
vgvassilev wrote:

```suggestion
  if (!OutOfProcessConfig.OOPExecutor.empty()) {
```

https://github.com/llvm/llvm-project/pull/155140