Test equality of GeoDataObject derived classes
Review Request #116534 - Created March 2, 2014 and submitted
Adds a protected method in GeoDataObject that compare the id and targetId of two objets of this type. Calls this method in each method implementing operator== of classes derived directly or indirectly from GeoObejectData. PS: Waiting for BUG 331673 to be done and I'll update the patch for those classes too.