Bug 211703 Support muti-view on report item.
As title described.
xtab/org.eclipse.birt.report.item.crosstab.core/src/org/eclipse/birt/report/item/crosstab/core/de/internal/CrosstabReportItemTask.java
* 
	 * @param axisType
	 * @param measureIndex
	 * @throws SemanticException
	 */
	public void removeGrandTotal( int axisType, int measureIndex )
			throws SemanticException
	{
		CrosstabViewHandle crosstabView = crosstab.getCrosstabView( axisType );
		if ( crosstabView != null )
		{
			crosstabView.removeGrandTotal( measureIndex );
		}
	}
	/**
	 * Gets the measure view list that define aggregations for the row/column
	 * grand total in the crosstab. Each item in the list is instance of
	 * <code>MeasureViewHandle</code>.
	 * 
	 * @param crosstab
	 * @param axisType
	 * @return
	 */
	public List getAggregationMeasures( int axisType )
	{
		
		if ( crosstab == null || crosstab.getGrandTotal( axisType ) == null )
			return Collections.EMPTY_LIST;
		List measures = new ArrayList( );
		for ( int i = 0; i < crosstab.getMeasureCount( ); i++ )