Well i can tell you 2 things.
1. g_allowvoting 1 is to allow voting on the server and you could turn it off so good find
2. g_gametype war, is to set the gametype to WAR but you could set it to say SD or TDM and i assume that would work also, so good find again.

As for oldvoting i have no idea what that does and the mplog one you have is to veiw logs on ur DEDICATED PC server.
Hope that gives you a better undestanding of what these codes do