[clang] [llvm] [clang] Add test run of 'dump_ast_matchers.py' (PR #165472)

[Aaron Ballman via cfe-commits]

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@@ -0,0 +1,4 @@
+// FIXME enable windows
+// UNSUPPORTED: system-windows
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AaronBallman wrote:

Why is the test unsupported on Windows?

https://github.com/llvm/llvm-project/pull/165472