[lld] Add (ignored) /link flag to lld-link for compatibility with MSVC link.exe (PR #168364)

[Alexandre Ganea via llvm-commits]

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@@ -862,6 +862,9 @@ opt::InputArgList ArgParser::parse(ArrayRef<const char *> argv) {
                 << "', did you mean '" << nearest << "'";
   }
 
+  if (args.hasArg(OPT_link))
+    Warn(ctx) << "ignoring /link, did you pass it multiple times?";
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aganea wrote:

Is there any value for this message? We can silently ignore the flng and nothing bad will happen.

https://github.com/llvm/llvm-project/pull/168364