Pos.Util.Jsend: Use CPP to handle generics-sop versions
Pos.Util.Jsend: Use CPP to handle generics-sop versions

input-output-hk/pos-haskell-prototype,input-output-hk/pos-haskell-prototype,input-output-hk/pos-haskell-prototype,input-output-hk/cardano-sl,input-output-hk/cardano-sl,input-output-hk/cardano-sl,input-output-hk/cardano-sl