title: c++ mark enum value as deprecated?
body: <p>Is it possible to mark an enum value as deprecated?</p>
  
  <p>e.g.</p>
  
  <pre><code>enum MyEnum {
      firstvalue = 0
      secondvalue,
      thirdvalue, // deprecated
      fourthvalue
  };
  </code></pre>
  
  <p>A second prize solution would be to ifdef a MSVC and a GCC solution.</p>