RT3548: Remove unsupported platforms

This last one for this ticket.  Removes WIN16.
So long, MS_CALLBACK and MS_FAR.  We won't miss you.

Reviewed-by: Richard Levitte <levitte@openssl.org>

apps/x509.c

diff --git a/apps/x509.c b/apps/x509.c
index 3bb2610..b3c2390 100644
--- a/apps/x509.c
+++ b/apps/x509.c
@@ -60,9 +60,6 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#ifdef OPENSSL_NO_STDIO
-#define APPS_WIN16
-#endif
 #include "apps.h"
 #include <openssl/bio.h>
 #include <openssl/asn1.h>
@@ -156,7 +153,7 @@
 NULL
 };
 
-static int MS_CALLBACK callb(int ok, X509_STORE_CTX *ctx);
+static int callb(int ok, X509_STORE_CTX *ctx);
 static int sign (X509 *x, EVP_PKEY *pkey,int days,int clrext, const EVP_MD *digest,
 						CONF *conf, char *section);
 static int x509_certify (X509_STORE *ctx,char *CAfile,const EVP_MD *digest,
@@ -1279,7 +1276,7 @@
 	return ret;
 	}
 
-static int MS_CALLBACK callb(int ok, X509_STORE_CTX *ctx)
+static int callb(int ok, X509_STORE_CTX *ctx)
 	{
 	int err;
 	X509 *err_cert;