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
/**
	 * Returns the text inside the TextFlow.
	 * 
	 * @return the text flow inside the text.
	 */
	public String getText() {
		return label.getText();
	}
	/**
	 * Sets the text of the TextFlow to the given value.
	 * 
	 * @param newText
	 *            the new text value.
	 */
	public void setText(String newText) {
		if (newText == null) {
			newText = "";
		}
		label.setText(newText);
	}
	/**
	 * Sets the over-line style of the text.
	 * 
	 * @param textOverline
	 *            The textOverline to set.
	 */
	public void setTextOverline(String textOverline) {
		label.setTextOverline(textOverline);
	}
	/**