Summary:
To deal with events with the same name as some methods (Del, Invalidate,
etc), the suffix Evt was added.
Thus, now we use
obj.ButtonClickedEvt += callback;
Instead of
obj.BUTTON_CLICKED += cal
The argument classes use the same scheme, being called <Evt name>_Args.
Depends on D5991
Reviewers: felipealmeida
Reviewed By: felipealmeida
Subscribers: cedric
Differential Revision: https://phab.enlightenment.org/D5992