About other assorted boneheadedness, the GType for GParamSpec is
called 'GParam'. Why? Who knows. I assume alcohol was involved,
but I honestly don't want to know.
This removes the last g-ir-scanner warning in Clutter.
* ClutterContainer::child-notify:
* @container: the container which received the signal
* @actor: the child that has had a property set
- * @pspec: the #GParamSpec of the property set
+ * @pspec: (type GParamSpec): the #GParamSpec of the property set
*
* The ::child-notify signal is emitted each time a property is
* being set through the clutter_container_child_set() and