remove support for non-ANSI compilation

*** 20,31 ****
   * 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.
   */
  
  /*
--- 20,32 ----
   * 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.
   */
  
  /*
*** 41,52 ****
   */
  
  #ifndef _ISO_TIME_ISO_H
  #define _ISO_TIME_ISO_H
  
- #pragma ident   "%Z%%M% %I%     %E% SMI" /* SVr4.0 1.18 */
- 
  #include <sys/feature_tests.h>
  
  #ifdef  __cplusplus
  extern "C" {
  #endif
--- 42,51 ----
*** 95,106 ****
          int     tm_yday;
          int     tm_isdst;
  };
  
  
- #if defined(__STDC__)
- 
  extern char *asctime(const struct tm *);
  extern clock_t clock(void);
  extern char *ctime(const time_t *);
  extern double difftime(time_t, time_t);
  extern struct tm *gmtime(const time_t *);
--- 94,103 ----
*** 108,131 ****
  extern time_t mktime(struct tm *);
  extern time_t time(time_t *);
  extern size_t strftime(char *_RESTRICT_KYWD, size_t, const char *_RESTRICT_KYWD,
          const struct tm *_RESTRICT_KYWD);
  
- #else /* __STDC__ */
- 
- extern char *asctime();
- extern clock_t clock();
- extern char *ctime();
- extern double difftime();
- extern struct tm *gmtime();
- extern struct tm *localtime();
- extern time_t mktime();
- extern time_t time();
- extern size_t strftime();
- 
- #endif  /* __STDC__ */
- 
  #if __cplusplus >= 199711L
  }
  #endif /* end of namespace std */
  
  #ifdef  __cplusplus
--- 105,114 ----