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/LabelFigure.java
* Sets the line-through style of the text.
	 * 
	 * @param textLineThrough
	 *            The textLineThrough to set.
	 */
	public void setTextLineThrough(String textLineThrough) {
		label.setTextLineThrough(textLineThrough);
	}
	/**
	 * Sets the underline style of the text.
	 * 
	 * @param textUnderline
	 *            The textUnderline to set.
	 */
	public void setTextUnderline(String textUnderline) {
		label.setTextUnderline(textUnderline);
	}
	/**
	 * Sets the horizontal text alignment style.
	 * 
	 * @param textAlign
	 *            The textAlign to set.
	 */
	public void setTextAlign(String textAlign) {
		label.setTextAlign(textAlign);
	}
	/**
	 * Sets the vertical text alignment style.
	 * 
	 * @param verticalAlign