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/command/LibraryCommand.java
activityStack.sendNotifcations( new ActivityStackEvent( activityStack,
					ActivityStackEvent.DONE ) );
		
	}
	/**
	 * Checks possible extends references to element in the given Library. If
	 * extends reference is unresolve, virtual elements are removed. And local
	 * property values of virtual elements are returned.
	 * 
	 * @param library
	 *            the library instance
	 * @return the map containing local values of virtual elements. Each key is
	 *         the id of extends child. Each value is another map of which the
	 *         key is the base id of virtual element and the value is property
	 *         name/value pair.
	 * @throws LibraryException
	 *             if there is any extends reference.
	 */
	private Map dealAllElementDecendents( Library library, int actionCode )
			throws SemanticException
	{
		
		
		Map overriddenValues = new HashMap( );
		LevelContentIterator contentIter = new LevelContentIterator( library, 1 );
		while ( contentIter.hasNext( ) )
		{
			DesignElement tmpElement = (DesignElement) contentIter.next( );
			if ( !tmpElement.getDefn( ).canExtend( ) )
				continue;