Moving External Core library to Hackage

[Tim Chevalier]

Hi,
I've uploaded the External Core library (currently living under
utils/ext-core in the GHC build tree) to Hackage, as mentioned in my
most recent commit. (http://hackage.haskell.org/package/extcore-0.2).

I suggest the library should be removed from the GHC tree sometime in
the not-too-distant future -- perhaps just leaving a pointer to the
Hackage page under utils/ext-core.

Cheers,
Tim

-- 
Tim Chevalier * http://cs.pdx.edu/~tjc/ * Often in error, never in doubt
"an intelligent person fights for lost causes,realizing that others
are merely effects" -- E.E. Cummings