Add Unix syslog.
 [rsc] --rw-rw-r-- M 615310 glenda sys 5376 Dec  2 15:01 lib/ndb/common
	/n/sourcesdump/2005/1202/plan9/lib/ndb/common:216,221 - 
	/n/sourcesdump/2005/1203/plan9/lib/ndb/common:216,222
	  udp=ntp port=123
	  udp=netbios-ns port=137
	  udp=snmp port=161
	+ udp=syslog port=514
	  udp=rip port=520
	  udp=dhcp6c port=546
	  udp=dhcp6s port=547