Copyright for readline library

[Kari Pahula]

I would use readline instead of editline to build ghc6 on Debian, but
the readline library package in Hackage has a problem.  I downloaded
version 1.0.1.0 from
http://hackage.haskell.org/cgi-bin/hackage-scripts/package/readline
and found this in System/Console/Readline.hsc:

-- Module      :  System.Console.Readline
-- Copyright   :  (c) unknown

I'm afraid I can't use it as it is.  Is there anything I could do to
help to find the correct attribution for this file?
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