remove support for non-ANSI compilation

*** 20,53 ****
   * CDDL HEADER END
   */
  /*      Copyright (c) 1988 AT&T */
  /*        All Rights Reserved   */
  
- 
  /*
   * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
  #ifndef _ASSERT_H
  #define _ASSERT_H
  
- #pragma ident   "%Z%%M% %I%     %E% SMI"        /* SVr4.0 1.6.1.4 */
- 
  #ifdef  __cplusplus
  extern "C" {
  #endif
  
- #if defined(__STDC__)
  #if __STDC_VERSION__ - 0 >= 199901L
  extern void __assert_c99(const char *, const char *, int, const char *);
  #else
  extern void __assert(const char *, const char *, int);
  #endif /* __STDC_VERSION__ - 0 >= 199901L */
- #else
- extern void _assert();
- #endif
  
  #ifdef  __cplusplus
  }
  #endif
  
--- 20,48 ----
   * CDDL HEADER END
   */
  /*      Copyright (c) 1988 AT&T */
  /*        All Rights Reserved   */
  
  /*
+  * Copyright 2014 Garrett D'Amore <garrett@damore.org>
+  *
   * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
  #ifndef _ASSERT_H
  #define _ASSERT_H
  
  #ifdef  __cplusplus
  extern "C" {
  #endif
  
  #if __STDC_VERSION__ - 0 >= 199901L
  extern void __assert_c99(const char *, const char *, int, const char *);
  #else
  extern void __assert(const char *, const char *, int);
  #endif /* __STDC_VERSION__ - 0 >= 199901L */
  
  #ifdef  __cplusplus
  }
  #endif
  
*** 66,82 ****
  
  #define assert(EX) ((void)0)
  
  #else
  
- #if defined(__STDC__)
  #if __STDC_VERSION__ - 0 >= 199901L
  #define assert(EX) (void)((EX) || \
          (__assert_c99(#EX, __FILE__, __LINE__, __func__), 0))
  #else
  #define assert(EX) (void)((EX) || (__assert(#EX, __FILE__, __LINE__), 0))
  #endif /* __STDC_VERSION__ - 0 >= 199901L */
- #else
- #define assert(EX) (void)((EX) || (_assert("EX", __FILE__, __LINE__), 0))
- #endif  /* __STDC__ */
  
  #endif  /* NDEBUG */
--- 61,73 ----