patch applied (cabal): Generalise deprecatedExtensions

[Ian Lynagh]

Tue Oct 26 06:11:21 PDT 2010  Ian Lynagh <igloo at earth.li>
  * Generalise deprecatedExtensions
  It now works with Extensions rather than KnownExtensions

    M ./Distribution/PackageDescription/Check.hs -1 +1
    M ./Language/Haskell/Extension.hs -3 +3

View patch online:
http://darcs.haskell.org/cgi-bin/darcsweb.cgi?r=cabal;a=darcs_commitdiff;h=20101026131121-3fd76-038c5f7bdbb71028977f93e36585e2118071d714.gz