Fix build with directory-1.2.6.2.

It started exporting a isSymbolicLink which supports windows. But,
git-annex does no use symlinks on windows yet and this conflicts with the
function by the same name from unix-compat, so hide it.

Utility/Directory.hs

@@ -11,7 +11,7 @@
 module Utility.Directory where
 
 import System.IO.Error
-import System.Directory
+import System.Directory hiding (isSymbolicLink)
 import Control.Monad
 import System.FilePath
 import Control.Applicative

Utility/FreeDesktop.hs

@@ -35,7 +35,7 @@ import Utility.Process
 import Utility.PartialPrelude
 
 import System.Environment
-import System.Directory
+import System.Directory hiding (isSymbolicLink)
 import System.FilePath
 import Data.List
 import Data.String.Utils

Utility/LinuxMkLibs.hs

@@ -14,7 +14,7 @@ import Utility.Monad
 import Utility.Path
 
 import Data.Maybe
-import System.Directory
+import System.Directory hiding (isSymbolicLink)
 import System.FilePath
 import Data.List.Utils
 import System.Posix.Files

Utility/LockFile/PidLock.hs

@@ -34,7 +34,7 @@ import Data.List
 import Network.BSD
 import System.FilePath
 import Data.Hash.MD5
-import System.Directory
+import System.Directory hiding (isSymbolicLink)
 import Control.Applicative
 import Prelude
 

Utility/Path.hs

@@ -12,7 +12,7 @@ module Utility.Path where
 
 import Data.String.Utils
 import System.FilePath
-import System.Directory
+import System.Directory hiding (isSymbolicLink)
 import Data.List
 import Data.Maybe
 import Data.Char

Utility/Tmp.hs

@@ -11,7 +11,7 @@
 module Utility.Tmp where
 
 import System.IO
-import System.Directory
+import System.Directory hiding (isSymbolicLink)
 import Control.Monad.IfElse
 import System.FilePath
 import Control.Monad.IO.Class