Improve dir checking in make_directories

Prefer faccessat to fstatat for dir checking.
Also, don’t bother doing either check if caller
is about to check the rough equivalent anyway.
* src/extract.c (make_directories): Now static.
2nd arg is now a three-way flag.  All uses changed.
Use faccessat instead of fstatat, to avoid EOVERFLOW issues.
(create_dir): New function, for use outside this module.
External caller changed.
(maybe_recoverable): Set *INTERDIR_MADE if make_directories
said we made the parent.

src/misc.c

@@ -1129,8 +1129,8 @@ chdir_do (idx_t i, bool create)
 		     directory. The one-top-level directory is
 		     allowed to be given as an absolute path.  */
 		  open_searchdir_how.resolve = 0;
-		  if (0 <= make_directories (curr->name, false))
-		    /* Directory created, retry */
+		  if (create_dir (curr->name))
+		    /* Directory likely exists now; retry.  */
 		    fd = openat (chdir_fd, curr->name,
 				 open_searchdir_how.flags & ~O_NOFOLLOW);
 		  open_searchdir_how = saved_open_searchdir_how;