ITA: tnef -- Tool to unpack MIME application/ms-tnef attachments

[Jari Aalto]

Adopting tnef (orpahaned, Jonathan C. Allen):

    https://cygwin.com/cygwin-pkg-maint

I have new 1.4.9 ready for both x86 and x86_64.

Let me know when I can upload.

Jari