patch applied (cabal): Add the new DoRec extension to Language.Haskell.Extension

[Ian Lynagh]

Fri Apr 16 13:56:27 PDT 2010  Ian Lynagh <igloo at earth.li>
  * Add the new DoRec extension to Language.Haskell.Extension
  Part of GHC trac #3968.

    M ./Language/Haskell/Extension.hs +4

View patch online:
http://darcs.haskell.org/cgi-bin/darcsweb.cgi?r=cabal;a=darcs_commitdiff;h=20100416205627-3fd76-e19c7dfa979c0bcfbe21675fcc258dcce99dc602.gz