Add a lint stub for __vfork14.S

lib/libc/sys/Lint___vfork14.c

@@ -0,0 +1,15 @@
+/*	$NetBSD: Lint___vfork14.c,v 1.1 1998/01/04 20:52:09 thorpej Exp $	*/
+
+/*
+ * This file placed in the public domain.
+ * Chris Demetriou, November 5, 1997.
+ */
+
+#include <unistd.h>
+
+/*ARGSUSED*/
+pid_t
+__vfork14()
+{
+	return (0);
+}