(oops) Apologies all, that last header-cleanup commit was from the wrong

tree. This further reduces header interdependencies, and makes some
associated cleanups.

ssl/ssl_lib.c

@@ -125,6 +125,7 @@
 #include <openssl/objects.h>
 #include <openssl/lhash.h>
 #include <openssl/x509v3.h>
+#include <openssl/dh.h>
 
 const char *SSL_version_str=OPENSSL_VERSION_TEXT;