5776 vfork and getwd should not be exposed under XPG7

*** 393,405 ****
  #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
  extern uid_t getuid(void);
  #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
  extern char *getusershell(void);
  #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
- #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
- extern char *getwd(char *);
- #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
  /*
   * The following ioctl prototype is duplicated in <stropts.h>. The
   * duplication is necessitated by XPG4.2 which requires the prototype
   * be defined in <stropts.h>.
   */
--- 393,402 ----
*** 557,571 ****
  #if (defined(_XPG4_2) && !defined(_XPG7)) || !defined(_STRICT_SYMBOLS)
  extern useconds_t ualarm(useconds_t, useconds_t);
  #endif
  extern int unlink(const char *);
  #if (defined(_XPG4_2) && !defined(_XPG7)) || !defined(_STRICT_SYMBOLS)
  extern int usleep(useconds_t);
- #endif
- #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
  extern pid_t vfork(void) __RETURNS_TWICE;
! #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
  #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
  extern void vhangup(void);
  #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
  extern ssize_t write(int, const void *, size_t);
  #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
--- 554,568 ----
  #if (defined(_XPG4_2) && !defined(_XPG7)) || !defined(_STRICT_SYMBOLS)
  extern useconds_t ualarm(useconds_t, useconds_t);
  #endif
  extern int unlink(const char *);
  #if (defined(_XPG4_2) && !defined(_XPG7)) || !defined(_STRICT_SYMBOLS)
+ extern char *getwd(char *);
  extern int usleep(useconds_t);
  extern pid_t vfork(void) __RETURNS_TWICE;
! #pragma unknown_control_flow(vfork)
! #endif
  #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
  extern void vhangup(void);
  #endif /* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
  extern ssize_t write(int, const void *, size_t);
  #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
*** 599,612 ****
  extern off64_t  tell64(int);
  extern int      truncate64(const char *, off64_t);
  extern int      lockf64(int, int, off64_t);
  #endif  /* _LARGEFILE64_SOURCE */
  
- #if !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2) || defined(__EXTENSIONS__)
- #pragma unknown_control_flow(vfork)
- #endif /* !defined(__XOPEN_OR_POSIX) || defined(_XPG4_2)... */
- 
  /*
   * getlogin_r() & ttyname_r() prototypes are defined here.
   */
  
  /*
--- 596,605 ----