[Lit Test] Updated 26 Lit tests to be C++11 compatible.

Expected diagnostics have been expanded to vary by C++ dialect.
RUN line has also been expanded to: default, C++98/03 and C++11.

llvm-svn: 252785
diff --git a/clang/test/SemaCXX/copy-initialization.cpp b/clang/test/SemaCXX/copy-initialization.cpp
index ea2db0c..d219ee5 100644
--- a/clang/test/SemaCXX/copy-initialization.cpp
+++ b/clang/test/SemaCXX/copy-initialization.cpp
@@ -1,4 +1,7 @@
 // RUN: %clang_cc1 -fsyntax-only -verify %s 
+// RUN: %clang_cc1 -fsyntax-only -verify -std=c++98 %s
+// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s
+
 class X {
 public:
   explicit X(const X&); // expected-note {{candidate constructor}}
@@ -58,7 +61,10 @@
 
   namespace Ex2 {
     struct S {
-      S(S&&); // expected-warning {{C++11}}
+      S(S&&);
+#if __cplusplus <= 199711L // C++03 or earlier modes
+      // expected-warning@-2 {{rvalue references are a C++11 extension}}
+#endif
       S(int);
     };
     const S a(0);