Release of unix 2.4.0.0

Vasili Galchin did a release of a new version of the unix library. 

    http://hackage.haskell.org/cgi-bin/hackage-scripts/package/unix-2.4.0.0

Hmm :(

This is a core package, maintained by libraries@, so shouldn't be being
uploaded to hackage by 3rd parties.

What can we do?

-- Don