remove support for non-ANSI compilation

*** 22,31 ****
--- 22,33 ----
  /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  /*        All Rights Reserved   */
  
  
  /*
+  * Copyright 2014 Garrett D'Amore <garrett@damore.org>
+  *
   * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
  #ifndef _SYS_VA_IMPL_H
*** 116,137 ****
  
  #elif defined(__BUILTIN_VA_STRUCT)      /* ------------------------ protocol */
  
  /* ISA __va_list structures defined in <sys/va_list.h> */
  
- #if defined(__STDC__)   /* source language is ISO C or C++ */
- 
  void __builtin_va_start(__va_list, ...);
  void *__builtin_va_arg_incr(__va_list, ...);
  
- #else   /* source language is K&R C */
- 
- int __builtin_va_start();
- char *__builtin_va_arg_incr();
- 
- #endif  /* source language */
- 
  #define __va_start(list, name)  __builtin_va_start(list, 0)
  #define __va_arg(list, type)    \
          ((type *)__builtin_va_arg_incr(list, (type *)0))[0]
  #define __va_copy(to, from)     __va_void(((to)[0] = (from)[0]))
  #define __va_end(list)          __va_void(0)
--- 118,130 ----