Bug 156497 [Regression][Acceptance]Report isn't refreshed when delete used library file.
Description: Report isn't refreshed when delete used library file. Steps to reproduce: 1.New a library, add a label, input actuate. 2.New a report, extend lib.label 3.Delete the library file. 4.Refresh the report in Outline of the report Expected result: Empty label in Layout. Actual result: label with content "actuate" in Layout.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ModuleHandle.java
* <li>Search file with the file locator (<code>IResourceLocator</code>)
	 * in session
	 * </ul>
	 * 
	 * @param fileName
	 *            file name to search
	 * @param fileType
	 *            file type. The value should be one of:
	 *            <ul>
	 *            <li><code>IResourceLocator.IMAGE</code>
	 *            <li><code>IResourceLocator.LIBRARY</code>
	 *            <li><code>IResourceLocator.MESSAGEFILE</code>
	 *            </ul>
	 *            Any invalid value will be treated as
	 *            <code>IResourceLocator.IMAGE</code>.
	 * @return the <code>URL</code> object if the file with
	 *         <code>fileName</code> is found, or null otherwise.
	 */
	public URL findResource( String fileName, int fileType )
	{
		return module.findResource( fileName, fileType );
	}
	/**
	 * Gets the result style sheet with given file name of an external CSS2
	 * resource.
	 * 
	 * @param fileName
	 *            the file name of the external CSS resource
	 * @return the <code>CssStyleSheetHandle</code> if the external resource
	 *         is successfully loaded