Changing "radlog" calls to RDEBUG & setting Module-Failure-Message

[Phil Mayers]

I run a small local patch that changes a few irritating calls to radlog 
into RDEBUG and sets the Module-Failure-Message inside rlm_eap; these 
are useful for logging per-request failure causes.

See here:

https://github.com/philmayers/freeradius-server/commit/baab30d0f16dc449c47a4686d86717c1a8f0712e


More generally - I personally think that radlog calls are appropriate 
for whole-server events (e.g. upstream proxy down) but not per-request 
events (except possibly very, very fatal errors) as a "radius.log" can 
grow surprisingly large when a client is banging away at you. What do 
others think?