patch applied (packages/Cabal): Fix building packages with ghc-6.8 or older

[Ian Lynagh]

Fri May 21 07:10:48 PDT 2010  Duncan Coutts <duncan at haskell.org>
  * Fix building packages with ghc-6.8 or older

    M ./Distribution/Simple/Program/HcPkg.hs -2 +13

View patch online:
http://darcs.haskell.org/cgi-bin/darcsweb.cgi?r=packages/Cabal;a=darcs_commitdiff;h=20100521141048-adfee-8f786193d7fef17d11f7d51ebaa624e57f2429cc.gz