Change the stack configuration to use the local Cabal lib

Authored by michalt on Jul 22 2016, 4:30 AM.

Description

Change the stack configuration to use the local Cabal lib

Hadrian should be built with a local Cabal from within the
GHC codebase. This makes the stack pick it up, instead of
using the released version of Cabal.

Signed-off-by: Michal Terepeta <michal.terepeta@gmail.com>