Avoid using fopen_safer and opendir_safer directly in favor of
letting gnulib transparently doing the work via "dirent--.h" and
"stdio--.h".
* find/oldfind.c (dirent-safer.h): Replace include ...
(dirent--.h): ... by this.
(process_dir): Change opendir_safer to the regular opendir call.
* find/sharefile.c (stdio-safer.h): Replace include ...
(stdio--.h): ... by this.
(sharefile_fopen): Change fopen_safer to regular fopen call.
* lib/fdleak.c (dirent-safer.h): Replace include ...
(dirent--.h): ... by this.
(get_proc_max_fd): Change opendir_safer to regular opendir call.
dc1a69f6dc