Deprecate quite a few recursive includes from the ssl.h API header and
remove some unnecessary includes from the internal header ssl_locl.h. This
then requires adding includes for bn.h in four C files.
diff --git a/ssl/ssltest.c b/ssl/ssltest.c
index aadfd89..f0b3c93 100644
--- a/ssl/ssltest.c
+++ b/ssl/ssltest.c
@@ -141,6 +141,7 @@
#include <openssl/rsa.h>
#include <openssl/dsa.h>
#include <openssl/dh.h>
+#include <openssl/bn.h>
#define _XOPEN_SOURCE_EXTENDED 1 /* Or gethostname won't be declared properly
on Compaq platforms (at least with DEC C).
