Bug 121498 When datasource/dataset deleted, the datasource/dataset property binding element haven't been deleted
When deleted the datasource/dataset, the datasource/dataset property binding element haven't been deleted. Expected result: This operation must be a transaction.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/command/ContentCommand.java
extendsCmd.setExtendsName( null );
			}
			
			if ( oldElement.getName( ) != null )
			{
				NameCommand nameCmd = new NameCommand( module, oldElement );
				nameCmd.dropElement( );
			}
		}
		catch ( SemanticException ex )
		{
			stack.rollback( );
			throw ex;
		}
		if ( addTemplateParam != null )
			stack.execute( addTemplateParam );
		
		stack.execute( replaceRecord );
		try
		{
			addElementNames( newElement );
		}
		catch ( NameException e )
		{
			stack.rollback( );
			throw e;
		}
		stack.commit( );
	}
}