title: Invoking install4j compiler from ant results in PermGen OutOfMemory errors
body: <p>I've run into a situation where install4j v4.2.8 runs fine and generates installers when using the GUI and when invoking install4jc from the command line, but fails with the following message when invoked via the install4j ant task:</p>
  
  <pre><code>install4j: compilation failed. Reason: java.lang.OutOfMemoryError: PermGen space
  </code></pre>
  
  <p>Using visualvm, I determined that the ant task is forking a separate JVM, which appears to fail when the PermGen usage hits about 88MB. The install4j ant task docs don't say anything about being able to pass VM args (such as -XX:MaxPermSize=256MB) through to the forked JVM, but I'm wondering if that or something similar would be an option.</p>