turn of PackageImports in cabal file

This makes it easier to build eg benchmarks of individual modules.

May be that most of these PackageImports are not really necessary,
dunno.

Utility/AuthToken.hs

@@ -5,6 +5,8 @@
  - License: BSD-2-clause
  -}
 
+{-# LANGUAGE PackageImports #-}
+
 module Utility.AuthToken (
 	AuthToken,
 	toAuthToken,

Utility/Base64.hs

@@ -5,6 +5,8 @@
  - License: BSD-2-clause
  -}
 
+{-# LANGUAGE PackageImports #-}
+
 module Utility.Base64 where
 
 import Utility.FileSystemEncoding

Utility/Hash.hs

@@ -5,7 +5,7 @@
  - License: BSD-2-clause
  -}
 
-{-# LANGUAGE BangPatterns #-}
+{-# LANGUAGE BangPatterns, PackageImports #-}
 
 module Utility.Hash (
 	sha1,

Utility/WebApp.hs

@@ -5,7 +5,7 @@
  - License: BSD-2-clause
  -}
 
-{-# LANGUAGE OverloadedStrings, CPP, RankNTypes #-}
+{-# LANGUAGE OverloadedStrings, CPP, RankNTypes, PackageImports #-}
 
 module Utility.WebApp (
 	browserProc,