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 2007 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
  /*      Copyright (c) 1988 AT&T */
*** 28,39 ****
  
  
  #ifndef _FTW_H
  #define _FTW_H
  
- #pragma ident   "%Z%%M% %I%     %E% SMI"
- 
  #include <sys/feature_tests.h>
  
  #include <sys/types.h>
  #include <sys/stat.h>
  
--- 30,39 ----
*** 120,131 ****
  #define nftw64          nftw
  #endif
  #endif  /* __PRAGMA_REDEFINE_EXTNAME */
  #endif  /* _LP64 && _LARGEFILE64_SOURCE */
  
- #if defined(__STDC__)
- 
  extern int ftw(const char *,
          int (*)(const char *, const struct stat *, int), int);
  extern int _xftw(int, const char *,
          int (*)(const char *, const struct stat *, int), int);
  #if defined(__EXTENSIONS__) || !defined(_XOPEN_SOURCE) || defined(_XPG4_2)
--- 120,129 ----
*** 148,177 ****
          int (*)(const char *, const struct stat64 *, int, struct FTW *),
          int, int);
  #endif /* !defined(_XOPEN_SOURCE) */
  #endif /* _LARGEFILE64_SOURCE .. */
  
- #else /* __STDC__ */
- 
- extern int ftw(), _xftw();
- 
- #if defined(__EXTENSIONS__) || !defined(_XOPEN_SOURCE) || defined(_XPG4_2)
- extern int nftw();
- #endif /* defined(__EXTENSIONS__) || !defined(_XOPEN_SOURCE) ... */
- 
- /* transitional large file interface versions */
- #if     defined(_LARGEFILE64_SOURCE) && !((_FILE_OFFSET_BITS == 64) && \
-             !defined(__PRAGMA_REDEFINE_EXTNAME))
- extern int ftw64();
- extern int _xftw64();
- #if !defined(_XOPEN_SOURCE)
- extern int nftw64();
- #endif /* !defined(_XOPEN_SOURCE) */
- #endif /* _LARGEFILE64_SOURCE .. */
- 
- #endif /* __STDC__ */
- 
  #define _XFTWVER        2       /* version of file tree walk */
  
  #define ftw(path, fn, depth)    _xftw(_XFTWVER, (path), (fn), (depth))
  
  #if     defined(_LARGEFILE64_SOURCE) && !((_FILE_OFFSET_BITS == 64) && \
--- 146,155 ----