ENYO-2291: copy enyo.setObject() & enyo.getObject() into ares namespace

- those method will disappear soon from Enyo (being replaced by
  non-syntax compatible enyo.setPath and enyo.getPath), so copy them to
  work on both enyo-2.2.0 (non-MVC) & enyo-2.3.x & later (MVC)

Enyo-DCO-1.1-Signed-off-by: Francois-Xavier KOWALSKI <francois-xavier.kowalski@hp.com>