title: How to solve validation error on xsi:noNamespaceSchemaLocation in jdoconfig.xml
body: <p>Since I updated today to GAE 1.7.2.1, I'm having validation errors in eclipse in all my jdoconfig.xml files.</p>
  
  <p>I have the default jdoconfig.xml content :</p>
  
  <pre><code>[...]
  &lt;jdoconfig xmlns="http://java.sun.com/xml/ns/jdo/jdoconfig"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:noNamespaceSchemaLocation="http://java.sun.com/xml/ns/jdo/jdoconfig"&gt;
  [...]
  </code></pre>
  
  <p>And eclipse validation throws:</p>
  
  <pre><code>Referenced file contains errors (http://java.sun.com/xml/ns/jdo/jdoconfig).  
  For more information, right click on the message in the Problems View and 
  select "Show Details..."
  </code></pre>
  
  <p>When clicking on details I can see a bunch of lines like:</p>
  
  <pre><code>s4s-elt-character: Non-whitespace characters are not allowed in schema elements
  other than 'xs:appinfo' and 'xs:documentation'. Saw 'var_U = "undefined";'.
  </code></pre>
  
  <p>In different lines and different content in "Saw ... "</p>
  
  <p>It occurs in every single project I start using the "New Web Application Project..." from the google plugin.</p>
  
  <p>So does anyone have this problem? Any fix?</p>