Fix: IE8 events error

* In IE8 if the DataTables width calculation functions were being
  triggered DataTables would clone the table node and then do a jQuery
  $().remove() on the cloned node. This was bad in IE8 as it meant that
  on the remove the events that were attached tot he original table were
  removed as well as the ones on the clone table. IE8 must retain some
  kind of link between the original and clone nodes. Using jQuery's
  clone() method resolves this.
* See thread 21040 for more information