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/ssl_cert.c b/ssl/ssl_cert.c
index aa074e4..258da8b 100644
--- a/ssl/ssl_cert.c
+++ b/ssl/ssl_cert.c
@@ -134,6 +134,7 @@
#include <openssl/pem.h>
#include <openssl/x509v3.h>
#include <openssl/dh.h>
+#include <openssl/bn.h>
#include "ssl_locl.h"
int SSL_get_ex_data_X509_STORE_CTX_idx(void)
