[oe] libmailtools-perl_2.06: task fetch fails: source not available anymore

[Roman I Khimov]

> could the source tarball `MailTools-2.06.tar.gz` please be put on the
> OpenEmbedded mirror, since it is not available anymore upstream [1]
> (only 2.07 and 2.08).

I have it available here and can attach to e-mail (52k) if there are no 
objections. But I think it's easier to update version in OE, shouldn't be 
problematic.