clang/darwin: Use response files with ld64.lld.darwinnew

[thakis]

Summary

The new MachO lld just grew support for response files in D92149, so let
the clang driver use it.

[thakis]

fewer build errors

clang/lib/Driver/ToolChains/Darwin.cpp

if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
     if (Arg *A = Args.getLastArg(options::OPT_fveclib)) {
       if (A->getValue() == StringRef("Accelerate")) {
         CmdArgs.push_back("-framework");
         CmdArgs.push_back("Accelerate");
       }
     }
   }
 
-  ResponseFileSupport ResponseSupport = ResponseFileSupport::AtFileUTF8();
-  if (Version[0] < 607) {
+  ResponseFileSupport ResponseSupport;
+  if (Version[0] >= 607 || LinkerIsLLDDarwinNew) {
+    ResponseSupport = ResponseFileSupport::AtFileUTF8();
+  } else {
     // For older versions of the linker, use the legacy filelist method instead.
     ResponseSupport = {ResponseFileSupport::RF_FileList, llvm::sys::WEM_UTF8,
                        "-filelist"};
   }
 
   std::unique_ptr<Command> Cmd = std::make_unique<Command>(
       JA, *this, ResponseSupport, Exec, CmdArgs, Inputs, Output);
   Cmd->setInputFileList(std::move(InputFileList));