Bug 190058 icon for aggregation type data items.
For aggregation type data items in cross tabs, we should show the icon instead of the sigma symbol. I am attaching the icon to replace it
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/editors/schematic/figures/TextFlow.java
int left = calculateLeft( this.getSize( ).width, frag.getWidth( ) );
			int top = calculateTop( this.getSize( ).height, totalHeight );
			int realX = frag.getX( ) + left + xoff;
			int realY = frag.getBaseline( )-frag.getAscent( ) + top + yoff;
			if ( !isEnabled( ) )
			{
				g.setForegroundColor( ColorConstants.buttonDarker );
				g.drawString( draw, realX, realY );
			}
			else
			{
				g.drawString( draw, realX, realY );
			}
			/**
			 * Only draws the line when width is greater than 1 to avoid
			 * unnecessary lines under/in blank text.
			 */
			if ( frag.getWidth( ) > 1 )
			{
				g.setLineWidth( lineWidth );
				/**
				 * Processes the underline style.
				 */
				if ( textUnderline
						.equals( DesignChoiceConstants.TEXT_UNDERLINE_UNDERLINE ) )
				{
					g.drawLine( realX, frag.getBaseline( )+ top + frag.getDescent( )-lineWidth , realX
							+ frag.getWidth( ),  frag.getBaseline( )+top+frag.getDescent( )-lineWidth );
				}