Revert "libgcrypt: update from 1.5.3 to 1.6.0"

Too much breakage.

This reverts commit 787977493002669fe23e3084dd522bf06a2e6d33.
haskell-OpenAL: update to version 1.6.0.0
haskell-doctest: update to version 0.9.10
haskell-haskell-names: update to version 0.3.2.3
haskell-http-client-conduit: update to version 0.2.0.1
haskell-http-client-tls: update to version 0.2.0.1
haskell-http-conduit: update to version 2.0.0.3
haskell-monad-logger: update to version 0.3.3.2
haskell-resourcet: update to version 0.4.10
haskell-stylish-haskell: update to version 0.5.9.0
haskell-yesod-auth: update to version 1.2.4.1
haskell-yesod-routes: update to version 1.2.0.4
haskell-packages.nix: OpenAL builds only with the latest OpenGL
haskell-packages.nix: the latest OpenGL needs the latest OpenGLRaw to compile