remove support for non-ANSI compilation

*** 17,26 ****
--- 17,28 ----
   * information: Portions Copyright [yyyy] [name of copyright owner]
   *
   * CDDL HEADER END
   */
  /*
+  * Copyright 2014 Garrett D'Amore <garrett@damore.org>
+  *
   * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
  /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
*** 96,111 ****
                                                  /* hostid string */
  #define DOM_NM_LN               64              /* maximum length of domain */
                                                  /* name */
  
  #if !defined(_KERNEL)
- #if defined(__STDC__)
  int sysinfo(int, char *, long);
- #else
- int sysinfo();
  #endif
- #endif
  
  #ifdef  __cplusplus
  }
  #endif
  
--- 98,109 ----