stdlib: Add Object.hash_code and Object.object_id
stdlib: Add Object.hash_code and Object.object_id

* object_id is an identifier for an object which should be unique over
  the object's lifetime.  Not guaranteed for all backends.
* hash_code existing on all objects means, for example, that any object
  can be put into a Set, and each object is considered distinct.  If
  you want multiple objects to be considered the same, you need to
  override it.

Plasmaworks/Rogue,AbePralle/Rogue,Plasmaworks/Rogue,AbePralle/Rogue,Plasmaworks/Rogue,Plasmaworks/Rogue