title: Issue with jaxb moxy when using binder to unmarshal xml with namespace
body: <p>I m using jaxb moxy to unmarshal a xml from binder but it gives exception:A descriptor with default root element beans was not found in the project. im also using package-info.java to specify namespace.</p>
  
  <p>Xml file to unmarshal-</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="UTF-8" standalone="no"?&gt;
  &lt;beans xmlns="http://www.example.org/package"&gt;
  &lt;/beans&gt;
  </code></pre>
  
  <p>Beans.java-</p>
  
  <pre><code>@XmlRootElement(namespace="http://www.example.org/package")
  public class Beans {
  
  String name = "ss";
  
  @XmlElement
  public String getName() {
      return name;
  }
  
  public void setName(String name) {
      this.name = name;
  }
  </code></pre>
  
  <p>}</p>
  
  <p>package-info.java</p>
  
  <pre><code>@XmlSchema(
      namespace="http://www.example.org/package",
      elementFormDefault=XmlNsForm.QUALIFIED)
  package com.jaxb.test;
  
  
  import javax.xml.bind.annotation.*;
  </code></pre>
  
  <p>Main class-</p>
  
  <pre><code>DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
          DocumentBuilder db = dbf.newDocumentBuilder();
          File xml = new File(
                  "D:\\eclipse-jee-indigo-SR2\beans.xml");
          Document document = db.parse(xml);
  
          JAXBContext jc = JAXBContext.newInstance(Beans.class);
  
  
  
          Binder&lt;Node&gt; binder = jc.createBinder();
  
          Beans customer = (Beans)   jc.createBinder().unmarshal(document);//throws exception
  
       //Beans customer = (Beans) jc.createUnmarshaller().unmarshal(xml);This works
      //Beans customer = (Beans) jc.createUnmarshaller().unmarshal(document);Throws same exception
  </code></pre>
  
  <p>Exception-</p>
  
  <pre><code>javax.xml.bind.UnmarshalException
  - with linked exception:
  [Exception [EclipseLink-25008] (Eclipse Persistence Services - 2.4.1.v20121003-   ad44345): org.eclipse.persistence.exceptions.XMLMarshalException
  Exception Description: A descriptor with default root element beans was not found in the project]
  at  org.eclipse.persistence.jaxb.JAXBUnmarshaller.handleXMLMarshalException(JAXBUnmarshaller.java:1014)
  at  org.eclipse.persistence.jaxb.JAXBUnmarshaller.unmarshal(JAXBUnmarshaller.java:199)
  at com.jaxb.test.JaxbTest.main(JaxbTest.java:43)
  </code></pre>