Better diagnostic for superfluous scope specifier inside a class definition for member functions. + Fixit.

Example: 
class A {
   void A::foo(); //warning: extra qualification on member 'foo'
};


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@115347 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/FixIt/fixit.cpp b/test/FixIt/fixit.cpp
index 9b39c9e..95d8a88 100644
--- a/test/FixIt/fixit.cpp
+++ b/test/FixIt/fixit.cpp
@@ -66,3 +66,8 @@
 // typedef CT<1> mainT(void);
 // mainT main; // TODO
 
+// extra qualification on member
+class C {
+  int C::foo();
+};
+