Don't overload the logging symbols from libfreeradius-server

Remove the dumb hacks in radeapclient.c and call the proper log initialisation functions. Seeing as it's linked against libfreeradius-server now we may as well use them.
It's there because it's used by eapsim_calculate_keys
Except in fips186prf.c
Don't overload default_log
Actually build with OPENSSL_SHA1 instead of just saying we're going to build with it
response_window of zero is OK for clients.

It means "use the home server response_window"
We can't build with openssl sha1 by default
Print timeouts for requests in debugging mode
Be more careful with proxy delays.  Should help #673