Make libssl opaque. Move all structures that were previously protected by

OPENSSL_NO_SSL_INTERN into internal header files.

Reviewed-by: Richard Levitte <levitte@openssl.org>

ssl/ssltest.c

@@ -188,6 +188,8 @@
 #endif
 #include <openssl/bn.h>
 
+#include "../ssl/ssl_locl.h"
+
 /*
  * Or gethostname won't be declared properly
  * on Compaq platforms (at least with DEC C).