Verify with ClamAV before unpack

[gerbert]

I guess it could be very useful to have an option to scan the archive with antivirus before extracting it. Even an option as a command-line setting in application settings like (use external tool to check the archive for viruses with arguments) would be sufficient. ClamAV, as far as I understand, offers more features like UNIX sockets, but, the easiest way would be using the cli tool (clamscan, as far as I remeber). Thanks!