remove support for non-ANSI compilation

*** 18,27 ****
--- 18,28 ----
   *
   * CDDL HEADER END
   */
  
  /*
+  * Copyright 2014 Garrett D'Amore <garrett@damore.org>
   * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
   */
  
  /*      Copyright (c) 1990, 1991 UNIX System Laboratories, Inc. */
  /*      Copyright (c) 1984, 1986, 1987, 1988, 1989, 1990 AT&T   */
*** 478,489 ****
  #define UTIME_OMIT      -2L
  #endif  /* defined(__EXTENSIONS__) ... */
  
  #if !defined(_KERNEL) || defined(_BOOT)
  
- #if defined(__STDC__)
- 
  #if !defined(__XOPEN_OR_POSIX) || (_POSIX_C_SOURCE > 2) || \
          defined(_XPG4_2) || defined(__EXTENSIONS__)
  extern int fchmod(int, mode_t);
  #endif /* !defined(__XOPEN_OR_POSIX) || (_POSIX_C_SOURCE > 2)... */
  
--- 479,488 ----
*** 513,559 ****
  extern int fchmodat(int, const char *, mode_t, int);
  extern int futimens(int, const struct timespec[2]);
  extern int utimensat(int, const char *, const struct timespec[2], int);
  #endif  /* defined(__EXTENSIONS__) ... */
  
- #else /* !__STDC__ */
- 
- #if !defined(__XOPEN_OR_POSIX) || (_POSIX_C_SOURCE > 2) || \
-         defined(_XPG4_2) || defined(__EXTENSIONS__)
- extern int fchmod();
- #endif /* !defined(__XOPEN_OR_POSIX) || (_POSIX_C_SOURCE > 2)... */
- 
- extern int chmod();
- extern int mkdir();
- extern int mkfifo();
- extern mode_t umask();
- 
- /* transitional large file interfaces */
- #if     defined(_LARGEFILE64_SOURCE) && !((_FILE_OFFSET_BITS == 64) && \
-             !defined(__PRAGMA_REDEFINE_EXTNAME))
- extern int fstat64();
- extern int stat64();
- extern int lstat64();
- #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) || \
-         defined(_ATFILE_SOURCE)
- extern int fstatat64();
- #endif /* defined (_ATFILE_SOURCE) */
- #endif
- 
- #if defined(__EXTENSIONS__) || defined(_ATFILE_SOURCE) || \
-         (!defined(_STRICT_STDC) && !defined(__XOPEN_OR_POSIX))
-         /* || defined(_XPG7) */
- extern int mkdirat();
- extern int mkfifoat();
- extern int mknodat();
- extern int fchmodat();
- extern int futimens();
- extern int utimensat();
- #endif  /* defined(__EXTENSIONS__) ... */
- 
- #endif /* defined(__STDC__) */
- 
  #include <sys/stat_impl.h>
  
  #endif /* !defined(_KERNEL) */
  
  #ifdef  __cplusplus
--- 512,521 ----