Blocking Rcon fix

[voron00]

1. Use libcod.
2. There was a patch somewhere to remove the rcon delay, but this opens a possibility for more aggressive brute-forcing so idk if that's an acceptable solution.

[kokonat]

1. Use libcod.
2. There was a patch somewhere to remove the rcon delay, but this opens a possibility for more aggressive brute-forcing so idk if that's an acceptable solution.

windows libcod have this fix?