Since I'm still rather new with Guix packaging API, I've mostly re-used
code from existing packages to write this one.
Hence the strong resemblance with "mb2md" package.

One thing I'm not so sure of however: In mb2md's declaration:

	(chmod "mb2md" #o555)

I'd tend to think it is necessary when we are unsure of upstream's
permissions.
Let me know if I'm wrong here.

-- 
Peter Neidhardt