Use new-style system-id macros everywhere possible.  I hope I haven't
missed any.

This compiles and runs on Linux, and external applications have no
problems with it.  The definite test will be to build this on VMS.

ssl/ssl_txt.c

diff --git a/ssl/ssl_txt.c b/ssl/ssl_txt.c
index 6e33eec..8b37a37 100644
--- a/ssl/ssl_txt.c
+++ b/ssl/ssl_txt.c
@@ -60,7 +60,7 @@
 #include <openssl/buffer.h>
 #include "ssl_locl.h"
 
-#ifndef NO_FP_API
+#ifndef OPENSSL_NO_FP_API
 int SSL_SESSION_print_fp(FILE *fp, SSL_SESSION *x)
 	{
 	BIO *b;