Avoid including cryptlib.h, it's not really needed.

Check if IDEA is being built or not.
This is part of a large change submitted by Markus Friedl <markus@openbsd.org>

ssl/ssl_sess.c

@@ -60,7 +60,6 @@
 #include <openssl/lhash.h>
 #include <openssl/rand.h>
 #include "ssl_locl.h"
-#include "cryptlib.h"
 
 static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *s);
 static void SSL_SESSION_list_add(SSL_CTX *ctx,SSL_SESSION *s);