Bug 174701 [Viewers] ViewerRow should be reused instead of connected to the Item
Currently we create a ViewerRow ver every Item we create this can degrade performance, we should cache the row and reuse it
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/ViewerCell.java
* 
	 * @param row
	 * @param columnIndex
	 */
	public ViewerCell(ViewerRow row, int columnIndex) {
		this.row = row;
		this.columnIndex = columnIndex;
	}
	/**
	 * Get the index of the cell.
	 * 
	 * @return int
	 */
	public int getColumnIndex() {
		return columnIndex;
	}
	/**
	 * Get the bounds of the cell.
	 * 
	 * @return {@link Rectangle}
	 */
	public Rectangle getBounds() {
		return row.getBounds(columnIndex);
	}
	/**
	 * Get the element this row represents.
	 * 
	 * @return {@link Object}
	 */
	public Object getElement() {