darcs patch: lower base requirement down to base-2

[Simon Marlow]

On 16/12/2009 21:37, Sergei Trofimovich wrote:
> Wed Dec 16 23:34:21 EET 2009  Sergei Trofimovich<slyfox at community.haskell.org>
>    * lower base requirement down to base-2
>    At least ghc-6.6.1 is able to build it without problems.
>    (package can be used in cabal-1.8, which is known to work
>    on ghc-6.4+)

I'll validate and apply; thanks.

Simon