Switch diagnostic text from "C++0x" over to "C++11".

We'd also like for "C++11" or "c++11" to be used for the warning
groups, but without removing the old warning flags. Patches welcome;
I've run out of time to work on this today.

llvm-svn: 141801
diff --git a/clang/test/SemaCXX/PR10458.cpp b/clang/test/SemaCXX/PR10458.cpp
index e1f077a..57588eb 100644
--- a/clang/test/SemaCXX/PR10458.cpp
+++ b/clang/test/SemaCXX/PR10458.cpp
@@ -2,6 +2,6 @@
 
 void f() {
   int arr[] = { 1, 2, 3 };
-  for (auto &i : arr) { // expected-warning {{'auto' type specifier is a C++0x extension}} expected-warning {{range-based for loop is a C++0x extension}}
+  for (auto &i : arr) { // expected-warning {{'auto' type specifier is a C++11 extension}} expected-warning {{range-based for loop is a C++11 extension}}
   }
 }