Import prebuilt clang toolchain for linux.
diff --git a/linux-x64/clang/include/llvm/Support/Locale.h b/linux-x64/clang/include/llvm/Support/Locale.h
new file mode 100644
index 0000000..f7a2c03
--- /dev/null
+++ b/linux-x64/clang/include/llvm/Support/Locale.h
@@ -0,0 +1,17 @@
+#ifndef LLVM_SUPPORT_LOCALE_H
+#define LLVM_SUPPORT_LOCALE_H
+
+namespace llvm {
+class StringRef;
+
+namespace sys {
+namespace locale {
+
+int columnWidth(StringRef s);
+bool isPrint(int c);
+
+}
+}
+}
+
+#endif // LLVM_SUPPORT_LOCALE_H