title: Can not install XQDT in eclipse
body: <pre><code>Cannot complete the install because one or more required items could not be found.
    Software being installed: XQuery Development Tools Feature 0.8.0.201107251305 (org.eclipse.wst.xquery.feature.feature.group 0.8.0.201107251305)
    Missing requirement: XQDT Core Plug-in 0.8.0.201107251305 (org.eclipse.wst.xquery.core 0.8.0.201107251305) requires 'bundle org.eclipse.dltk.core [3.0.0,4.0.0)' but it could not be found
    Cannot satisfy dependency:
      From: XQuery Development Tools Feature 0.8.0.201107251305 (org.eclipse.wst.xquery.feature.feature.group 0.8.0.201107251305)
  To: org.eclipse.wst.xquery.core [0.8.0.201107251305]
  </code></pre>