platform support for counting column widths and checking isprint

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154944 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Support/Locale.h

@@ -0,0 +1,17 @@
+#ifndef LLVM_SUPPORT_LOCALE
+#define LLVM_SUPPORT_LOCALE
+
+#include "llvm/ADT/StringRef.h"
+
+namespace llvm {
+namespace sys {
+namespace locale {
+
+int columnWidth(StringRef s);
+bool isPrint(int c);
+
+}
+}
+}
+
+#endif // LLVM_SUPPORT_LOCALE