1) correct MAX_PID according to system definition.
2) replace fprintf(stderr,...)/perror/exit by 4.4 equivalence.
3) make strings enough larger so they can't overflow: MAXHOSTNAMELEN for
host and MAXPATHLEN for filenames.
4) call execl with correct parameters (compress -> gzip).
imported the newsyslog command from NetBSD - it make the "rotation" of
the logfiles much simpler (it is currently done by "hand" in the
/etc/[daily,weekly,monthly] scripts) - now it will be done by invoking
newsyslog every hour which is very customizable via a
/etc/newsyslog.conf file
