lib/driver/libcdio.sym: cdio_realpath is extern now.

udffile.c: remove warning
test/driver/gnu_linux.c: don't have scsi-tuple-linux any more.

example/udffile.c

@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 2005, 2006, 2008, 2009 Rocky Bernstein <rocky@gnu.org>
+  Copyright (C) 2005, 2006, 2008, 2009, 2010 Rocky Bernstein <rocky@gnu.org>
   
   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -34,6 +34,10 @@
 
 #include <stdio.h>
 
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
 #ifdef HAVE_ERRNO_H
 #include <errno.h>
 #endif