Added -l argument to print labels for event types, codes and values.
Added -i argument to print all device info.
Added support for printing input properties.
Change-Id: I3cacb716dbc38f50217b9dfc24ba44d08f352603
Add new -p option to easily get the output showing which events are reported by the devices.
Improve the reported events output a bit by including a name for each event type.
Extend help text to include a description of each options, so I don't have to look in the source code next time. :)