Bug 145698 Name change won't enable "restore property" button
Steps to reproduce: 1.New a report, extends lib.label 2.Choose the label, switch to property editor, chang its name to "aa" 3.Choose the label again Expected result: "Restore property" button is enabled Actual result: "Restore property" button is grayed out
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ModuleHandle.java
* Returns the name of the tool that created the design.
	 * 
	 * @param toolName
	 *            the name of the tool
	 */
	public void setCreatedBy( String toolName )
	{
		try
		{
			setStringProperty( CREATED_BY_PROP, toolName );
		}
		catch ( SemanticException e )
		{
			assert false;
		}
	}
	/**
	 * Sets the design file name. This method will send notifications instance
	 * of <code>AttributeEvent</code> to all the attribute listeners
	 * registered in the module.
	 * 
	 * @param newName
	 *            the new file name. It may contain the relative/absolute path
	 *            information. This name must include the file name with the
	 *            filename extension.
	 */
	public void setFileName( String newName )
	{
		getModule( ).setFileName( newName );
		if ( !StringUtil.isBlank( newName ) )