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/ColumnViewer.java
*/
				public CellEditor getCellEditor(Object element) {
					return getCellEditors()[columnIndex];
				}
				/*
				 * (non-Javadoc)
				 * 
				 * @see org.eclipse.jface.viewers.EditingSupport#getValue(java.lang.Object)
				 */
				public Object getValue(Object element) {
					return getCellModifier().getValue(element,
							(String) getColumnProperties()[columnIndex]);
				}
				/*
				 * (non-Javadoc)
				 * 
				 * @see org.eclipse.jface.viewers.EditingSupport#setValue(java.lang.Object,
				 *      java.lang.Object)
				 */
				public void setValue(Object element, Object value) {
					getCellModifier().modify(findItem(element),
							(String) getColumnProperties()[columnIndex], value);
				}
			});
		}
	}
	/**
	 * Creates a generic viewer column for the given column widget, based on the
	 * given label provider.
	 *