[clang] [clang][modules] Print library module manifest path. (PR #76451)

[Thorsten Schütt via cfe-commits]

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@@ -0,0 +1,15 @@
+// Test that -print-library-module-manifest-path finds the correct file.
+
+// RUN: %clang -print-library-module-manifest-path \
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tschuett wrote:

--print-runtime-dir, --print-target-triple,  --print-supported-cpus, and --print-supported-extensions take 2 dashes.

https://github.com/llvm/llvm-project/pull/76451