remove support for non-ANSI compilation

*** 18,36 ****
   * information: Portions Copyright [yyyy] [name of copyright owner]
   *
   * CDDL HEADER END
   */
  /*
   * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
  #ifndef _SYS_REBOOT_H
  #define _SYS_REBOOT_H
  
- #pragma ident   "%Z%%M% %I%     %E% SMI"
- 
  #ifndef _ASM
  #include <sys/types.h>
  #endif
  
  #ifdef  __cplusplus
--- 18,36 ----
   * information: Portions Copyright [yyyy] [name of copyright owner]
   *
   * CDDL HEADER END
   */
  /*
+  * Copyright 2014 Garrett D'Amore <garrett@damore.org>
+  *
   * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
  #ifndef _SYS_REBOOT_H
  #define _SYS_REBOOT_H
  
  #ifndef _ASM
  #include <sys/types.h>
  #endif
  
  #ifdef  __cplusplus
*** 63,77 ****
  #define RB_NOBOOTCLUSTER        0x00040000 /* don't boot as a cluster */
  #define RB_DEBUGENTER           0x00080000 /* enter the debugger at boot */
  
  #ifndef _ASM
  
- #if defined(__STDC__)
  extern int reboot(int, char *);
- #else
- extern int reboot();
- #endif
  
  #if defined(_KERNEL)
  
  extern int boothowto;
  
--- 63,73 ----