[core libraries] tyConHash -- quick fix?

[Herbert Valerio Riedel]

On 2015-03-11 at 10:39:41 +0100, Simon Peyton Jones wrote:

[...]

> This is new in 7.10, so we could fix it now with no trouble.
> Simon

Here's a bit more background information:

Afaics, tyConHash was introduced in
  
  http://git.haskell.org/ghc.git/commitdiff/e0b63e02b78d0bd31a073738b1154a93d22dccca

and it was recently re-exported via

  http://git.haskell.org/ghc.git/commitdiff/56e0ac98c3a439b8757a2e886db259270bdc85f0

which followed the same questionable naming scheme for the really new
'typeRepHash' field accessor