Cabal revisions of llvm-hs-6.1.0

Hackage metadata revisions edit the .cabal file after upload; each diff below is one revision.

 name: llvm-hs version: 6.1.0+x-revision: 1 license: BSD3 license-file: LICENSE author: Anthony Cowley, Stephen Diehl, Moritz Kiefer <moritz.kiefer@purelyfunctional.org>, Benjamin S. Scarlet                , containers  library+  -- Metadata.h missing+  build-depends: base <0   +   default-language: Haskell2010   build-tools: hsc2hs, llvm-config   ghc-options: -Wall -fno-warn-name-shadowing -fno-warn-orphans