Don't emit double parentheses in __clang_version__.

PR14040.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@165415 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/InitPreprocessor.cpp b/lib/Frontend/InitPreprocessor.cpp
index 6aeb05f..585599a 100644
--- a/lib/Frontend/InitPreprocessor.cpp
+++ b/lib/Frontend/InitPreprocessor.cpp
@@ -325,8 +325,8 @@
   Builder.defineMacro("__clang_patchlevel__", "0");
 #endif
   Builder.defineMacro("__clang_version__", 
-                      "\"" CLANG_VERSION_STRING " ("
-                      + getClangFullRepositoryVersion() + ")\"");
+                      "\"" CLANG_VERSION_STRING " "
+                      + getClangFullRepositoryVersion() + "\"");
 #undef TOSTR
 #undef TOSTR2
   if (!LangOpts.MicrosoftMode) {