Changed integer type for rlm_eap_{ttls,peap} tunnel types to bool where applicable
Use enums instead of define lists in rlm_eap_peap

But only for the values that are only used internally.
As posted to the list
Merge pull request #726 from herwinw/peap_proxy_as_eap_boolean

Some cleanups in rlm_eap{peap,ttls} headers