syslogd: Refactor internals to use new socket API

This patch is inspired, in part, by FreeBSD syslogd but now diverges
onto its own path.  Special handling for AF_UNIX sockets are required
on Linux, which unlike BSD cannot use getaddrinfo() on UNIX sockets.

- Rip out old funix[] and finet support
- Add new concept of peers
- Linked list of peers can be > 20
- Temporarily open up to accept all remote conns
- Remove old logerror(), replaced with new log macros

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>

test/start.sh

@@ -17,7 +17,7 @@ EOF
 
 cat <<EOF > ${CONFD}/bar.conf
 # For remote logging
-*.*	@127.0.0.2
+*.*	@127.0.0.2:${PORT}
 EOF
 
 ../src/syslogd -b :${PORT} -d -n -f ${CONF} -p ${SOCK} -p ${ALTSOCK} &