title: Spring test 4.2.5 says "he attribute classes is undefined for the annotation type ContextConfiguration"
body: <p>I'm working on project with spring-framework 4.2.5, I'm configuring tests with JUnit 4.12 and spring-test 4.2.5, I have a config class annotated with <code>@Configuration</code> and <code>@ComponentScan</code>.  </p>
  
  <p>When I annotate the test with:</p>
  
  <p><code>@ContextConfiguration(classes = MyConfigClass.class)</code></p>
  
  <p>Eclipse gives an error and says: </p>
  
  <pre><code>The attribute 'classes' is undefined for the annotation type ContextConfiguration
  </code></pre>