Optional random "Sysop is" string replacement during logon

Set sysop_available and/or sysop_unavailable in the [logon] section of your
modopts.ini to a comma-separated list of strings to pick at random and replace
the default text.dat LiSysopAvailable and LiSysopNotAvailable strings during
logon (displayed as part of the "logon info" block near the end of the
hard-coded logon sequence).

Inspired by the SYSAVAIL.C modification that I used to use with my own
custom ("INHOUSE") build of Synchronet, this is now available for all sysops
to replace "Available" or "Not Available" with a random funny/smart phrase of
your choosing (but without commas; a separate delimeter could be used if that
is a problem).

exec/logon.js

@@ -24,6 +24,16 @@ if(options.draw_avatar_right === undefined)
 	options.draw_avatar_right = true;
 if(options.show_logon_list === undefined)
 	options.show_logon_list = true;
+if(options.sysop_available) {
+	require("text.js", 'LiSysopAvailable');
+	var list = options.sysop_available.split(',');
+	bbs.replace_text(LiSysopAvailable, list[random(list.length)].trim());
+}
+if(options.sysop_unavailable) {
+	require("text.js", 'LiSysopNotAvailable');
+	var list = options.sysop_unavailable.split(',');
+	bbs.replace_text(LiSysopNotAvailable, list[random(list.length)].trim());
+}
 
 if(options.eval_first)
 	eval(options.eval_first);