title: Merge properties of Java.util.Properties into ProperPlaceHolderConfigurer
body: <p>Currently working on Spring Project. 
  In my project people are using 2 approaches to load properties file:</p>
  
  <ol>
  <li>Using <code>java.util.Properties</code></li>
  <li>Using <code>PropertyPlaceHolderConfigurer</code></li>
  </ol>
  
  <p>Actually i have jar file which has a java util.Property object and in my main project i want to use it to resolve placeholders in spring xml files.
  Is there any way to use Property object to resolve Placeholders or merge them with PropertyPlaceHolderConfiguere object?</p>