title: Can't use JSTL in JSP page, with project that includes juel-impl jar because of ClassCastException with ExpressionFactoryImpl
body: <p>The error is:</p>
  
  <pre><code>SEVERE: Servlet.service() for servlet [jsp] in context with path [] threw exception      [Unable to compile class for JSP] with root cause
  java.lang.ClassCastException: de.odysseus.el.ExpressionFactoryImpl cannot be cast to javax.el.ExpressionFactory
  at javax.el.ExpressionFactory.newInstance(ExpressionFactory.java:180)
  at javax.el.ExpressionFactory.newInstance(ExpressionFactory.java:107)
  at org.apache.jasper.compiler.PageInfo.&lt;init&gt;(PageInfo.java:79)
  at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:110)
      .....
  </code></pre>
  
  <p>The project is using a war overlay, in which the overlaid project has the juel-impl jar, which is necessary for its use of shindig. Any way to use jstl in the child project jsp pages?</p>