net.server: Fall back to default backend from libevent instead of always select
Fixes that selecting libevent when unavaibalbe would fall back to select
instead of epoll, even if that's available.
This way, we only have to update it in once place when choosing a new
default.
The Prosody project is open to contributions (see HACKERS file), but is
maintained daily by:
- Matthew Wild (mail: matthew [at] prosody.im)
- Waqas Hussain (mail: waqas [at] prosody.im)
- Kim Alvefur (mail: zash [at] prosody.im)
You can reach us collectively by email: developers [at] prosody.im
or in realtime in the Prosody chatroom: prosody@conference.prosody.im