Proposal: System.FilePath: current directory should be ".", not ""

See http://hackage.haskell.org/trac/ghc/ticket/2034 to which I have attached a fairly simple patch. All the tests pass. The main change is that splitFileName "foo" = (".", "foo") and takeDirectory "foo" = "." and "." x = x Discussion period: 2 weeks (5 October) Cheers, Simon