Merge branch 'devs/bdilly/edje_multiseat'
This series implement multiseat support on Edje:
* emit signals with seat name as suffix
* handle multiseat focus
* add optional argument to FOCUS_SET and FOCUS_OBJECT actions
to specify a seat
* add Edje naming for seats (incremental) with flag
to disable this behaviour - so custom (evas) names will be used
* add 3 examples exploring all these new features
Reviewed By: cedric, iscaro, jpeg
Differential Revision: https://phab.enlightenment.org/D4451
@feature