Use the new behavior of Efl.Object.event_callback_call to correctly
update events to pass Efl.Model objects while still suppling path
strings for legacy smart callbacks.
Override Elm.Fileselector.event_callback_legacy_call in order to separate
the types of any incoming event call that uses Efl.Model.
Elm.Interface.Fileselector now supports Efl.Model objects, allowing users
to work with paths from different data models.
Example of model attribution:
ELm_Fileselector *fs = eo_add(EFL_FILESELECTOR_CLASS, NULL);
Efl_Model *model = ...;
elm_interface_fileselector_model_set(fs, model, NULL);
Previously events used to use class name as a prefix and ignored eo_prefix
when specified. This is no longer the case. Events follow eo_prefix by default
now. In order to get around this for classes where this is undesirable, a new
field event_prefix was added which takes priority over eo_prefix. If neither
is specified, class name is used like previously.
@feature