hadrian: add late_ccs flavour transformer
This MR registers enableLateCCS as the late_ccs flavour transformer, so it's possible to build profiled libs with -fprof-late without profiled ghc with a flavour combination of perf+late_ccs.
This MR registers enableLateCCS as the late_ccs flavour transformer, so it's possible to build profiled libs with -fprof-late without profiled ghc with a flavour combination of perf+late_ccs.