mod_version: Handle access denied from uname()
Discovered while experimenting with a stricter SystemCallFilter setting
See man:systemd.exec(5)
-- Prosody IM
-- Copyright (C) 2008-2010 Matthew Wild
-- Copyright (C) 2008-2010 Waqas Hussain
--
-- This project is MIT/X11 licensed. Please see the
-- COPYING file in the source package for more information.
--
module:set_global(); -- we're a global module
-- TODO delete this whole concept