[llvm] [llvm-lit] Add precommit test to verify current behavior of glob expansion in lit's internal shell (PR #106325)

[Alexander Richardson via llvm-commits]

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@@ -0,0 +1,2 @@
+## This is the second example file used for testing glob pattern matching.
+RUN: This is the second example file.
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arichardson wrote:

Yes that's exactly what I meant. The suffix doesn't matter we just want two files matching the glob.

https://github.com/llvm/llvm-project/pull/106325