patch applied (cabal): Ban package names that are not valid windows file names

[Duncan Coutts]

Mon Aug 25 17:55:02 PDT 2008  Duncan Coutts <duncan at haskell.org>
  * Ban package names that are not valid windows file names
  At least for the purposes of distribution. So if you're on unix
  then you can call your package 'LPT1' if you feel you must, but
  you cannot distribute a package with this name.

    M ./Distribution/PackageDescription/Check.hs -1 +10

View patch online:
http://darcs.haskell.org/cabal/_darcs/patches/20080826005502-adfee-ea18a7472a865766c1bcfe03e06172effa58e865.gz