Depend on latest development version of Cabal lib

cabal-install/cabal-install.cabal

@@ -50,7 +50,7 @@ Executable cabal
         Hackage.Upload
         Hackage.Utils
 
-    build-depends: Cabal >= 1.3.2, filepath >= 1.0, network,
+    build-depends: Cabal >= 1.3.3, filepath >= 1.0, network,
                    zlib >= 0.3, HTTP >= 3000.0 && < 3001.1
 
     if flag(old-base)