Bug 180118 Enhance to print out source stack trace in preview mode.[0002]
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/servlet/BirtEngineServlet.java
{
	/**
	 * TODO: what's this?
	 */
	private static final long serialVersionUID = 1L;
	/**
	 * Local initialization.
	 *