[llvm] [llvm-strings] Add --encoding={s,S,utf8} option (PR #221794)

[via llvm-commits]

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@@ -101,6 +111,125 @@ static void strings(raw_ostream &OS, StringRef FileName,
     }
   };
 
+  std::locale Loc("");
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aokblast wrote:

I remember a invalid locale in env variable throws a error in here. I am  not sure whethere we should handle this or not?

https://github.com/llvm/llvm-project/pull/221794