add lastlogin_ip field to account table submission

[trevius]

Yeah, personally I would have preferred just a last_used_ip field in the accounts table, but the way he did it should be ok as well. I prefer to use a gui for all MySQL stuff, so having to open the accounts table to find the account ID in it, then checking the new account_ip table for the account ID and entries for it is just 1 extra step. We can always add in the last_used_ip field at any time though. I just don't want to overkill the whole IP tracking idea :P

Really, the best use of tracking every single IP that someone uses would be to tell if it was them cheating or maybe someone else playing their character and cheating with it. But, since we don't log IPs in the hackers table yet, that isn't very useful just yet. I think the only other reason to track all IPs an account has used would be for finding all accounts that this same person has ever used. So, if you wanted to make sure to ban all of their accounts, you could figure out which are theirs fairly easily. Though, you might wind up banning other people's accounts, since people tend to share accounts quite often in EQEmu even though it is a bad habit to get into.