add support for inserting a DeclarationName into a diagnostic directly
without calling getAsString().  This implicitly puts quotes around the
name, so diagnostics need to be tweaked to accommodate this.

llvm-svn: 59916
diff --git a/clang/test/SemaCXX/nested-name-spec.cpp b/clang/test/SemaCXX/nested-name-spec.cpp
index 18cb3b4..8e7e17a 100644
--- a/clang/test/SemaCXX/nested-name-spec.cpp
+++ b/clang/test/SemaCXX/nested-name-spec.cpp
@@ -21,11 +21,11 @@
 }
 
 namespace B {
-  void ::A::Af() {} // expected-error {{definition or redeclaration for 'Af' not in a namespace enclosing 'A'}}
+  void ::A::Af() {} // expected-error {{definition or redeclaration of 'Af' not in a namespace enclosing 'A'}}
 }
 
 void f1() {
-  void A::Af(); // expected-error {{definition or redeclaration for 'Af' not allowed inside a function}}  
+  void A::Af(); // expected-error {{definition or redeclaration of 'Af' not allowed inside a function}}  
 }
 
 void f2() {