Fix hasOwnProperty on various types wrapped in QML

Fix hasOwnProperty on various types wrapped in QML

* Change semantics of Object::query to not walk the prototype chain but let the
  caller do that where needed (__hasProperty__)
* Re-implement query in various places
* Implement method_hasOwnProperty to fall back to query() if getOwnProperty failed
* Fix missing prototype initialization in some qml wrappers, as well as missing base
  class calls to ::get()

Change-Id: Ic2a702fd5ff3be2ff3c8317a8a24f99940a9594f
Reviewed-by: Lars Knoll <lars.knoll@digia.com>