New EAP type: EAP-FAST!

Thanks to a supporter who wants to remain anonymous, we now have a new EAP type in the server: EAP-FAST. Please see the v3.1.x branch for details. The sample configuration is in raddb/mods-available/eap. Look for "fast". It's been tested to work with wpa_supplicant, and multiple versions of Cisco hardware. Thanks to the people at inverse.ca, we've also put in a minor fix for EAP-MSCHAPv2 which makes Cisco NEAT work. Please report any issues here. Alan DeKok.