mod_muc_mam: Fix reference to "user" in debug message copied from mod_mam

mod_muc_mam: Merge main and RSM-specific log message into a single one

mod_muc_mam: Fix copypaste mistake in debug logging This line was copied from mod_mam, where `origin.username` made sense, less so here.

mod_message: Fire event for groupchat messages sent to bare JID This is becoming more common in XMPP as people experiment with a MIX-like model where the bare JID joins a group chat instead of a full JID. Specifically right now this is being added to help with processing notifications from mod_muc_offline_delivery.

net.server_epoll: Separate handling of "closed" from other errors The intent is to ensure 'ondisconnect' only gets called once, while giving buffered outgoing data a last chance to be delivered via the :close() path in case the connection was only shutdown in one direction.

net.server_epoll: Skip attempt to flush write buffer when not connected Before 22825cb5dcd8 connection attempts that failed (e.g. connection refused) would be immediately destroyed. After, it would schedule another write cycle and then report 'ondisconnect' again when failing. Thanks Martin for reporting

Merge 0.11->trunk

net.server_epoll: Add a hard deadline on shutdown to extra-fix #1670 Should ensure shutdown even if sockets somehow take a very long to get closed.

net.server_epoll: Close sockets added after shutdown signal (fixes #1670) This should ensure that sockets get closed even if they are added after the quit signal. Otherwise they may keep the server alive.

prosodyctl: Fix later import of LuaFileSystem lfs or WHAT How did this even happen?