pass ffi include/library directories to HsCpp
pass ffi include/library directories to HsCpp

izgzhen/hadrian,sdiehl/ghc,sdiehl/ghc,snowleopard/hadrian,sdiehl/ghc,sdiehl/ghc,sdiehl/ghc,snowleopard/shaking-up-ghc,sdiehl/ghc,bgamari/shaking-up-ghc,sdiehl/ghc