Re-enable christiaanb's ghc-typelits-* packages
Re-enable christiaanb's ghc-typelits-* packages

They all successfully build on GHC 8.2.1
creichert/stackage,GregorySchwartz/stackage,simonmichael/stackage,fimad/stackage,athanclark/stackage,Shimuuar/stackage,spencerjanssen/stackage,clinty/stackage,jonschoning/stackage,lwm/stackage,soenkehahn/stackage,asr/stackage,massysett/stackage,int-index/stackage,stackbuilders/stackage,mrkkrp/stackage,iand675/stackage,wereHamster/stackage,peti/stackage,mgajda/stackage,k0ral/stackage,fpco/stackage,ethercrow/stackage,mstksg/stackage,michalkonecny/stackage,garetxe/stackage,phaazon/stackage,Daniel-Diaz/stackage,ygale/stackage