remove support for non-ANSI compilation

*** 20,31 ****
   * CDDL HEADER END
   */
  /*      Copyright (c) 1988 AT&T */
  /*        All Rights Reserved   */
  
- 
  /*
   * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
  /*
--- 20,32 ----
   * CDDL HEADER END
   */
  /*      Copyright (c) 1988 AT&T */
  /*        All Rights Reserved   */
  
  /*
+  * Copyright 2014 Garrett D'Amore <garrett@damore.org>
+  *
   * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
  /*
*** 85,114 ****
  #endif
  #else
  #error "ISA not supported"
  #endif
  
- #if defined(__STDC__)
- 
  extern int setjmp(jmp_buf) __RETURNS_TWICE;
  #pragma unknown_control_flow(setjmp)
  extern int _setjmp(jmp_buf) __RETURNS_TWICE;
  #pragma unknown_control_flow(_setjmp)
  extern void longjmp(jmp_buf, int) __NORETURN;
  extern void _longjmp(jmp_buf, int) __NORETURN;
  
- #else
- 
- extern int setjmp() __RETURNS_TWICE;
- #pragma unknown_control_flow(setjmp)
- extern int _setjmp() __RETURNS_TWICE;
- #pragma unknown_control_flow(_setjmp)
- extern void longjmp();
- extern void _longjmp();
- 
- #endif  /* __STDC__ */
- 
  #if __cplusplus >= 199711L
  }
  #endif /* end of namespace std */
  
  #if __cplusplus >= 199711L
--- 86,102 ----