Finished obsoleting interfaces for XPG7.

*** 329,338 ****
--- 329,364 ----
  #undef  _XOPEN_SOURCE
  #define _XOPEN_SOURCE                   700
  #endif
  
  /*
+  * As another simplification attempt for the rest of our headers, we
+  * define the following macros to indicate that a specific XPG standard
+  * is in force, AND symbols should be restricted.  This lets us prune
+  * symbols that should not be visible under a given standard.  These should
+  * not be used by applications directly.
+  */
+ #if defined(_STRICT_SYMBOLS) && defined(_XPG3)
+ #define _STRICT_XPG3
+ #endif
+ #if defined(_STRICT_SYMBOLS) && defined(_XPG4)
+ #define _STRICT_XPG4
+ #endif
+ #if defined(_STRICT_SYMBOLS) && defined(_XPG4_2)
+ #define _STRICT_XPG4_2
+ #endif
+ #if defined(_STRICT_SYMBOLS) && defined(_XPG5)
+ #define _STRICT_XPG5
+ #endif
+ #if defined(_STRICT_SYMBOLS) && defined(_XPG6)
+ #define _STRICT_XPG6
+ #endif
+ #if defined(_STRICT_SYMBOLS) && defined(_XPG7)
+ #define _STRICT_XPG7
+ #endif
+ 
+ /*
   * _XOPEN_VERSION is defined by the X/Open specifications and is not
   * normally defined by the application, except in the case of an XPG4
   * application.  On the implementation side, _XOPEN_VERSION defined with
   * the value of 3 indicates an XPG3 application. _XOPEN_VERSION defined
   * with the value of 4 indicates an XPG4 or XPG4v2 (UNIX 95) application.