Remove xls and doc macros

[Jose]

>Well, first of all work out how to do it using whichever virus scanning
>program you use.

>Then have a look at the options in sweep.pl and the wrapper for that
scanner,
>and change them to always remove macros.

>Dunno how easy it is with any particular scanner, but if it's going to
work,
>that's how to do it.

I have been trying it with f-prot and I have no possitive results.