get_objects
Description:
Retrieves a list of objects for the given names.
 After this, object names/return location pairs should be listed, with a null pointer ending the
      list, like:
  GObject *my_label, *a_button, *main_timeline;
  clutter_script_get_objects (script,
                              "my-label", &my_label,
                              "a-button", &a_button,
                              "main-timeline", &main_timeline,
                              NULL);Note: This function does not increment the reference count of the returned objects.
Parameters:
| this | a Script | 
| ... | return location for a Object, then additional names, ending with  | 
| first_name | the name of the first object to retrieve | 
Returns:
| the number of objects returned. |