gnu: ghc-cryptonite: Update description.

* gnu/packages/haskell.scm (ghc-cryptonite)[description]: Shorten overly
  technical package description.

gnu: Add ghc-pandoc.

* gnu/packages/haskell.scm (ghc-pandoc): New variable.

gnu: Add ghc-http-client-tls.

* gnu/packages/haskell.scm (ghc-http-client-tls): New variable.

gnu: Add ghc-connection.

* gnu/packages/haskell.scm (ghc-connection): New variable.

gnu: Add ghc-socks.

* gnu/packages/haskell.scm (ghc-socks): New variable.

gnu: Add ghc-tls.

* gnu/packages/haskell.scm (ghc-tls): New variable.

gnu: Add ghc-x509-system.

* gnu/packages/haskell.scm (ghc-x509-system): New variable.

gnu: Add ghc-x509-validation.

* gnu/packages/haskell.scm (ghc-x509-validation): New variable.

gnu: Add ghc-x509-store.

* gnu/packages/haskell.scm (ghc-x509-store): New variable.

gnu: Add ghc-x509.

* gnu/packages/haskell.scm (ghc-x509): New variable.

gnu: Add ghc-memory.

* gnu/packages/haskell.scm (ghc-memory): New variable.

gnu: Add ghc-cryptonite.

* gnu/packages/haskell.scm (ghc-cryptonite): New variable.

gnu: Add ghc-tasty-kat.

* gnu/packages/haskell.scm (ghc-tasty-kat): New variable.

gnu: Add ghc-asn1-parse.

* gnu/packages/haskell.scm (ghc-asn1-parse): New variable.

gnu: Add ghc-asn1-encoding.

* gnu/packages/haskell.scm (ghc-asn1-encoding): New variable.

gnu: Add ghc-asn1-types.

* gnu/packages/haskell.scm (ghc-asn1-types): New variable.

gnu: Add ghc-pem.

* gnu/packages/haskell.scm (ghc-pem): New variable.

gnu: Add ghc-hourglass.

* gnu/packages/haskell.scm (ghc-hourglass): New variable.

gnu: Add ghc-byteable.

* gnu/packages/haskell.scm (ghc-byteable): New variable.

gnu: Add ghc-http-client.

* gnu/packages/haskell.scm (ghc-http-client): New variable.