By default, '-l' (last few callers) option will pull from previous days

If modopts.ini [logonlist] last_few_days is set (to a number), that will
dictate the maximum number of previous days to pull last few callers from
(e.g. set to '0' for previous behavior).

Also, '-l' can now be used with a command-line option (e.g. '-l <num>')
to specify the number of callers to display (overriding the modopts.ini
last_fwe_callers value).

This should address issue (feature request) #371.

exec/logonlist.js

@@ -84,9 +84,13 @@ function print(hdr, num, days_ago)
 	return true;
 }
 
-if(argv.indexOf('-l') >= 0) { // Last few callers?
+var argi = argv.indexOf('-l');
+if(argi >= 0) { // Last few callers?
+	var count = -options.last_few_callers;
+	if(argi < argc)
+		count = -parseInt(argv[argi + 1], 10);
 	if(!this.print(options.last_few_callers_msg || "\x01n\x01g\x01hLast few callers:\x01n\r\n"
-		,-options.last_few_callers))
+		,count, options.last_few_days))
 		console.print(options.first_caller_msg || "\x01n\x01g\x01hYou are the first caller of the day!");
 	console.crlf();
 } else {