mark functions with CM_OVERRIDE

Source/cmIncludeExternalMSProjectCommand.h

@@ -27,19 +27,25 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  virtual cmCommand* Clone() { return new cmIncludeExternalMSProjectCommand; }
+  cmCommand* Clone() CM_OVERRIDE
+  {
+    return new cmIncludeExternalMSProjectCommand;
+  }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
-  virtual bool InitialPass(std::vector<std::string> const& args,
-                           cmExecutionStatus& status);
+  bool InitialPass(std::vector<std::string> const& args,
+                   cmExecutionStatus& status) CM_OVERRIDE;
 
   /**
    * The name of the command as specified in CMakeList.txt.
    */
-  virtual std::string GetName() const { return "include_external_msproject"; }
+  std::string GetName() const CM_OVERRIDE
+  {
+    return "include_external_msproject";
+  }
 
   cmTypeMacro(cmIncludeExternalMSProjectCommand, cmCommand);
 };