ecore_con: Ecore_Con_Server now on top of Efl_Net!

ecore_con: Ecore_Con_Server now on top of Efl_Net!

This is a major work and unfortunately couldn't be split into smaller
pieces as old code was highly coupled.

Ecore_Con_Server is now a wrapper around Efl_Net_Dialer_Simple
(ecore_con_server_connect()) and Efl_Net_Server_Simple
(ecore_con_server_add()), doing all that the original version did with
some fixes so ecore_con_ssl_server_upgrade() and
ecore_con_ssl_client_upgrade() are more usable -- see the examples and
-t/--type=tcp+ssl.

I tried to be bug-compatible, with code annotations where things
doesn't make sense. This was based on ecore_con_suite tests and some
manual experimenting with the examples, these can be helpful if you
find regressions (report/assign to me).