Bug 229084 [About] up/down buttons don't enable for About->Plug-in Details->Columns
The Columns dialog in About->Plug-in Details->Columns has an up and a down button. They don't enable when a list item is selected.
bundles/org.eclipse.jface/src/org/eclipse/jface/internal/ConfigureColumnsDialog.java
}
		ColumnObject columnObject = columnObjects[index];
		columnObjects[index] = columnObjects[newIndex];
		columnObjects[newIndex] = columnObject;
		table.getItem(index).dispose();
		TableItem newItem = new TableItem(table, SWT.NONE, newIndex);
		newItem.setText(columnObject.name);
		newItem.setData(columnObject);
		table.setSelection(newIndex);
		handleSelectionChanged(newIndex);
	}
	private void createLabel(final Composite composite, String string) {
		Label label = new Label(composite, SWT.NONE);
		label.setText(string);
	}
	/**
	 * @param item
	 * @return
	 */
	private String getColumnName(Item item) {
		if (item instanceof TableColumn) {
			return ((TableColumn) item).getText();
		} else if (item instanceof TreeColumn) {
			return ((TreeColumn) item).getText();
		}
		return ""; 
	}
	/**
	 * @param item
	 * @return