Give DH, DSA, and RSA functions to "up" their reference counts. Otherwise,

dependant code has to directly increment the "references" value of each
such structure using the corresponding lock. Apart from code duplication,
this provided no "REF_CHECK/REF_PRINT" checking and violated
encapsulation.

crypto/dsa/dsa_lib.c

@@ -228,6 +228,22 @@ void DSA_free(DSA *r)
 	OPENSSL_free(r);
 	}
 
+int DSA_up(DSA *r)
+	{
+	int i = CRYPTO_add(&r->references, 1, CRYPTO_LOCK_DSA);
+#ifdef REF_PRINT
+	REF_PRINT("DSA",r);
+#endif
+#ifdef REF_CHECK
+	if (i < 2)
+		{
+		fprintf(stderr, "DSA_up, bad reference count\n");
+		abort();
+		}
+#endif
+	return ((i > 1) ? 1 : 0);
+	}
+
 int DSA_size(const DSA *r)
 	{
 	int ret,i;