Deprecate the macro MAC_OS_pre_X.

ssl/ssl.h

diff --git a/ssl/ssl.h b/ssl/ssl.h
index 541f494..b366281 100644
--- a/ssl/ssl.h
+++ b/ssl/ssl.h
@@ -1125,7 +1125,7 @@
 					    const char *file);
 #ifndef OPENSSL_SYS_WIN32
 #ifndef OPENSSL_SYS_VMS
-#ifndef MAC_OX_pre_X
+#ifndef OPENSSL_SYS_MACINTOSH_CLASSIC /* XXXXX: Better scheme needed! [was: #ifndef MAC_OS_pre_X] */
 int	SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stackCAs,
 					   const char *dir);
 #endif