[clang] Support target names with dots in more utilities (PR #65812)

[James Henderson via cfe-commits]

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@@ -600,6 +600,14 @@ StringRef extension(StringRef path, Style style) {
   return fname.substr(pos);
 }
 
+StringRef program_name(StringRef path, Style style) {
+  // In the future this may need to be extended to other
+  // program suffixes.
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jh7370 wrote:

Unnecessarily wrapped.

https://github.com/llvm/llvm-project/pull/65812