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
{
			URL systemId = URIUtil.getDirectory( newName );
			if ( systemId != null )
				getModule( ).setSystemId( systemId );
		}
		AttributeEvent event = new AttributeEvent( module,
				AttributeEvent.FILE_NAME_ATTRIBUTE );
		module.broadcastFileNameEvent( event );
	}
	/**
	 * Sets an external file that provides help information for the report.
	 * 
	 * @param helpGuide
	 *            the name of an external file
	 */
	public void setHelpGuide( String helpGuide )
	{
		try
		{
			setStringProperty( HELP_GUIDE_PROP, helpGuide );
		}
		catch ( SemanticException e )
		{
			assert false;
		}
	}
	/**
	 * Sets the script called when the report starts executing.
	 * 
	 * @param value