Update `directory` submodule to v1.2.6.1 release
Update `directory` submodule to v1.2.6.1 release

This fixes a build-failure on OSX

mettekou/ghc,shlevy/ghc,olsner/ghc,snoyberg/ghc,vTurbine/ghc,mettekou/ghc,sgillespie/ghc,sgillespie/ghc,sdiehl/ghc,olsner/ghc,shlevy/ghc,vTurbine/ghc,snoyberg/ghc,snoyberg/ghc,vikraman/ghc,mettekou/ghc,shlevy/ghc,vikraman/ghc,vTurbine/ghc,olsner/ghc,shlevy/ghc,sdiehl/ghc,olsner/ghc,snoyberg/ghc,sgillespie/ghc,shlevy/ghc,tjakway/ghcjvm,olsner/ghc,vTurbine/ghc,ezyang/ghc,tjakway/ghcjvm,mettekou/ghc,vikraman/ghc,vTurbine/ghc,mettekou/ghc,sdiehl/ghc,ezyang/ghc,vTurbine/ghc,ezyang/ghc,olsner/ghc,olsner/ghc,sgillespie/ghc,shlevy/ghc,ezyang/ghc,vikraman/ghc,tjakway/ghcjvm,tjakway/ghcjvm,tjakway/ghcjvm,sdiehl/ghc,ezyang/ghc,vikraman/ghc,tjakway/ghcjvm,sdiehl/ghc,sgillespie/ghc,snoyberg/ghc,shlevy/ghc,snoyberg/ghc,sgillespie/ghc,vikraman/ghc,sdiehl/ghc,snoyberg/ghc,sdiehl/ghc,vikraman/ghc,mettekou/ghc,sgillespie/ghc,ezyang/ghc,vTurbine/ghc,tjakway/ghcjvm,mettekou/ghc,ezyang/ghc