[PATCH] Provide user name in ClangTidyOptions.

[Alexander Kornienko]

================
Comment at: clang-tidy/ClangTidyOptions.h:58
@@ -57,2 +57,3 @@
     Options.AnalyzeTemporaryDtors = false;
+    Options.User = "unknown user";
     return Options;
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klimek wrote:
> I'd probably default to empty, so checks can decide not to insert something in case there's no user name available.
llvm::None would work better for signalling that there's no value available.

http://reviews.llvm.org/D5440