first round of POSIX 2008 stuff

*** 22,32 ****
  /*
   * Copyright (c) 1995, 1996, by Sun Microsystems, Inc.
   * All rights reserved.
   */
  /*
!  * Copyright 2013 Garrett D'Amore <garrett@damore.org>
   */
  
  #ifndef _STRINGS_H
  #define _STRINGS_H
  
--- 22,32 ----
  /*
   * Copyright (c) 1995, 1996, by Sun Microsystems, Inc.
   * All rights reserved.
   */
  /*
!  * Copyright 2014 Garrett D'Amore <garrett@damore.org>
   */
  
  #ifndef _STRINGS_H
  #define _STRINGS_H
  
*** 39,56 ****
  
  #ifdef  __cplusplus
  extern "C" {
  #endif
  
! #if defined(__STDC__)
! 
  extern int bcmp(const void *, const void *, size_t);
  extern void bcopy(const void *, void *, size_t);
  extern void bzero(void *, size_t);
- 
  extern char *index(const char *, int);
  extern char *rindex(const char *, int);
  
  /*
   * X/Open System Interfaces and Headers, Issue 4, Version 2, defines
   * both <string.h> and <strings.h>.  The namespace requirements
   * do not permit the visibility of anything other than what is
--- 39,56 ----
  
  #ifdef  __cplusplus
  extern "C" {
  #endif
  
! /* These symbols were replaced with mem* in XPG7 */
! #if (!defined(_STRICT_SYMBOLS)) || (!defined(_XPG7))
  extern int bcmp(const void *, const void *, size_t);
  extern void bcopy(const void *, void *, size_t);
  extern void bzero(void *, size_t);
  extern char *index(const char *, int);
  extern char *rindex(const char *, int);
+ #endif
  
  /*
   * X/Open System Interfaces and Headers, Issue 4, Version 2, defines
   * both <string.h> and <strings.h>.  The namespace requirements
   * do not permit the visibility of anything other than what is
*** 72,102 ****
  extern int strcasecmp_l(const char *, const char *, locale_t);
  extern int strncasecmp_l(const char *, const char *, size_t, locale_t);
  #endif  /* defined(_XPG7) */
  #endif  /* defined(_XPG4_2) && !defined(__EXTENSIONS__) */
  
- #else
- 
- extern int bcmp();
- extern void bcopy();
- extern void bzero();
- 
- extern char *index();
- extern char *rindex();
- 
- #if defined(_XPG4_2) && !defined(__EXTENSIONS__)
- extern int ffs();
- extern int strcasecmp();
- extern int strncasecmp();
- #if defined(_XPG7)
- extern int strcasecmp_l();
- extern int strncasecmp_l();
- #endif
- #endif /* defined(_XPG4_2) && !defined(__EXTENSIONS__) */
- 
- #endif  /* __STDC__ */
- 
  #ifdef  __cplusplus
  }
  #endif
  
  #endif  /* _STRINGS_H */
--- 72,81 ----