patch applied (packages/Cabal): Add note about ticket #689 about deprecated extensions

[Ian Lynagh]

Tue Jun 22 08:13:28 PDT 2010  Duncan Coutts <duncan at haskell.org>
  * Add note about ticket #689 about deprecated extensions

    M ./Language/Haskell/Extension.hs +6

View patch online:
http://darcs.haskell.org/cgi-bin/darcsweb.cgi?r=packages/Cabal;a=darcs_commitdiff;h=20100622151328-adfee-e7ff4f84fd7c5ce51b1c227ef5afb30c90aa03e5.gz