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 */
*** 158,172 ****
  extern void mdpreboot(int, int, char *);
  extern int kadmin(int, int, void *, cred_t *);
  extern void killall(zoneid_t);
  #endif
  
- #if defined(__STDC__)
  extern int uadmin(int, int, uintptr_t);
- #else
- extern int uadmin();
- #endif
  
  #endif  /* _ASM */
  
  #ifdef  __cplusplus
  }
--- 160,170 ----