Update pretty submodule to v1.1.3.2 release
Update pretty submodule to v1.1.3.2 release

The `pretty-1.1.3.2` release is the version designated for GHC 8.0.1

/cc @dterei

Differential Revision: https://phabricator.haskell.org/D1633

ezyang/ghc,snoyberg/ghc,gridaphobe/ghc,GaloisInc/halvm-ghc,olsner/ghc,sgillespie/ghc,sdiehl/ghc,shlevy/ghc,shlevy/ghc,GaloisInc/halvm-ghc,snoyberg/ghc,oldmanmike/ghc,vikraman/ghc,sgillespie/ghc,sdiehl/ghc,shlevy/ghc,vTurbine/ghc,gridaphobe/ghc,vTurbine/ghc,ezyang/ghc,vikraman/ghc,mcschroeder/ghc,mcschroeder/ghc,gridaphobe/ghc,shlevy/ghc,nushio3/ghc,ezyang/ghc,tjakway/ghcjvm,oldmanmike/ghc,gridaphobe/ghc,sdiehl/ghc,nushio3/ghc,sgillespie/ghc,ezyang/ghc,mettekou/ghc,vikraman/ghc,nushio3/ghc,ezyang/ghc,GaloisInc/halvm-ghc,snoyberg/ghc,oldmanmike/ghc,vikraman/ghc,vTurbine/ghc,oldmanmike/ghc,sdiehl/ghc,mettekou/ghc,shlevy/ghc,GaloisInc/halvm-ghc,gridaphobe/ghc,nushio3/ghc,sgillespie/ghc,GaloisInc/halvm-ghc,sgillespie/ghc,mettekou/ghc,olsner/ghc,sdiehl/ghc,nushio3/ghc,shlevy/ghc,olsner/ghc,snoyberg/ghc,vTurbine/ghc,olsner/ghc,mcschroeder/ghc,snoyberg/ghc,olsner/ghc,olsner/ghc,oldmanmike/ghc,tjakway/ghcjvm,gridaphobe/ghc,mettekou/ghc,snoyberg/ghc,tjakway/ghcjvm,GaloisInc/halvm-ghc,mettekou/ghc,GaloisInc/halvm-ghc,vikraman/ghc,vTurbine/ghc,sdiehl/ghc,olsner/ghc,sdiehl/ghc,ezyang/ghc,mcschroeder/ghc,nushio3/ghc,mettekou/ghc,vTurbine/ghc,tjakway/ghcjvm,oldmanmike/ghc,gridaphobe/ghc,vikraman/ghc,vTurbine/ghc,mcschroeder/ghc,snoyberg/ghc,sgillespie/ghc,tjakway/ghcjvm,shlevy/ghc,mettekou/ghc,mcschroeder/ghc,oldmanmike/ghc,ezyang/ghc,nushio3/ghc,vikraman/ghc,tjakway/ghcjvm,sgillespie/ghc,tjakway/ghcjvm,mcschroeder/ghc