remove support for non-ANSI compilation

*** 1,6 ****
--- 1,8 ----
  /*
+  * Copyright 2014 Garrett D'Amore <garrett@damore.org>
+  *
   * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   *
   * Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T
   * All Rights Reserved
*** 128,146 ****
  
  #ifndef _PATH_RESCONF
  #define _PATH_RESCONF           "/etc/resolv.conf"
  #endif
  
- #ifdef __STDC__
  #ifndef __P
  #define __P(x)  x
  #endif
- #else
- #ifndef __P
- #define __P(x)  ()
- #endif
- #endif /* __STDC__ */
  
  typedef enum { res_goahead, res_nextns, res_modified, res_done, res_error }
          res_sendhookact;
  
  typedef res_sendhookact (*res_send_qhook)__P((struct sockaddr * const *ns,
--- 130,142 ----