darkstat: [18.06] procd init script and enabling additional parameters

This is the same change as the one on master
This is to change the init script to a procd init script
This also enable some additional parameters in the binary that
were present but not enabled:
The export file (option export_file)
The import file (option import_file)
The daylog (option daylog_file)
These are disabled by default.  Also, the option to run as a daemon
is removed, as not compatible with procd.

There is no change in the binary.

Signed-off-by: Jean-Michel Lacroix <lacroix@lepine-lacroix.info>

net/darkstat/files/darkstat.config

@@ -1,13 +1,12 @@
 config darkstat
 	option interface        'lan'
 	option syslog           false
-	option verbose          true
-	option no_daemon        false
+	option verbose          false
 	option no_promisc       false
 	option no_dns           false
 	option no_macs          false
 	option no_lastseen      false
-#	option httpaddr         '0.0.0.0'
+	option httpaddr         '0.0.0.0'
 #	option httpport         '667'
 #	option network_filter   'not (src net 192.168.1 and dst net 192.168.1)'
 #	option network_netmask  '192.168.1.0/255.255.255.0'
@@ -17,4 +16,6 @@ config darkstat
 #	option ports_max        '60'
 #	option ports_keep       '30'
 #	option highest_port     '65534'
-
+#	option export_file      'darkstat_export.log'
+#	option import_file      'darkstat_export.log'
+#	option daylog_file      'darkstat_daylog.log'