Check presence of Autorun on output key

[Rafiot]

It should never happen: the contents of the partitions are in their own repository.

In case, for some raison, the attacker manage to exploit the conversion, it does not hurt to check the presence of autorun.inf on the output key.

If it is the case, the content is malicious and should not be opened.

What should we do ?

I would suggest to remove the whole content of the output key and to print a big warning in the log file.