Running the Cabal tests

[Edward Z. Yang]

I would not worry too much about these; they're a bit touchy due to the
use of symlinks.  If you could figure out why they are failing that
would be helpful though!

Edward

Excerpts from Erik de Castro Lopo's message of 2016-03-19 21:15:45 -0700:
> Erik de Castro Lopo wrote:
> 
> > These test don't fail when I'm building with ghc-7.10 (which was also used to
> > build GHC). Should these tests fail like that?
> 
> Correction, these tests pass with ghc-7.10 on my laptop and fail on my Jenkins
> box. My laptop and Jenkins box are both x86_64/linux running Debian. They have
> identical packages for ghc-7.10 and cabal-install.
> 
> Erik