patch applied (cabal): Deprecate defaultUserHooks, export autoconfUserHooks. Fix ticket #165

[Don Stewart]

ross:
> On Mon, Jan 28, 2008 at 10:18:25AM -0800, Don Stewart wrote:
> > Spotted that this morning. You're running the latest cabal on hackage?
> 
> Have to.  People keep uploading packages that use the latest features.
> It's supposed to be safe for old packages unless they have non-trivial
> Setup scripts.

Sure. Just good to know what hackage is going to use to do the testing.