title: Eclipse complaining about web-app attributes
body: <p>My web-app declaration in my web.xml is:</p>
  
  <pre><code>&lt;web-app version="2.4"
           xmlns="http://java.sun.com/xml/ns/j2ee"
            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" &gt;
  </code></pre>
  
  <p>And eclipse complains about all 4 attributes, here is one Eclipse complaint:</p>
  
  <pre><code>Attribute "version" must be declared for element type "web-app"
  </code></pre>
  
  <p>Why is Eclipse complaining about these attributes?  Am I doing something wrong here?</p>