Remove dirfd() hacks

(cherry picked from commit 38227c2441ad80bbf000f3a5fda40f5ca1dd6e3d)

Conflicts:

	compat/dirfd.c
	include/vlc_fixups.h
Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>

compat/dirfd.c

@@ -25,12 +25,10 @@
 #include <dirent.h>
 #include <errno.h>
 
-int dirfd (DIR *dir)
+int (dirfd) (DIR *dir)
 {
-#if defined (__sun__)
-    return dir->dd_fd;
-#elif defined (__APPLE__)
-    return dir->__dd_fd;
+#ifdef dirfd
+    return dirfd (dir);
 #else
     (void) dir;
 # ifdef ENOTSUP

include/vlc_fixups.h

@@ -183,10 +183,7 @@ int fsync (int fd);
 
 /* dirent.h */
 #ifndef HAVE_DIRFD
-#if defined(__APPLE__) || defined(__OS2__)
-#undef dirfd
-#endif
-int dirfd (DIR *);
+int (dirfd) (DIR *);
 #endif
 
 #ifndef HAVE_FDOPENDIR