title: Valid <property> names in Ant
body: <p>I'd like to set some properties in my ant build file, the names of which, are based on ant's build in properties. In particular, I'd like to set a property like:</p>
  
  <pre><code>&lt;property name="${ant.project.name}.compiled" value="true" /&gt;
  </code></pre>
  
  <p>However, when I tried this the ${ant.project.home} portion was not expanded.</p>
  
  <p>Is it possible to use the value of properties as the names of other properties, and if so, how?</p>