turn on PackageImports globally

This will make it easier to use the Evil Splicer, when it needs to add
package qualified imports

And there's no real downside.

Annex.hs

@@ -5,7 +5,7 @@
  - Licensed under the GNU GPL version 3 or higher.
  -}
 
-{-# LANGUAGE PackageImports, GeneralizedNewtypeDeriving, TypeFamilies, MultiParamTypeClasses #-}
+{-# LANGUAGE GeneralizedNewtypeDeriving, TypeFamilies, MultiParamTypeClasses #-}
 
 module Annex (
 	Annex,

Assistant/Monad.hs

@@ -5,7 +5,7 @@
  - Licensed under the GNU GPL version 3 or higher.
  -}
 
-{-# LANGUAGE PackageImports, GeneralizedNewtypeDeriving, MultiParamTypeClasses #-}
+{-# LANGUAGE GeneralizedNewtypeDeriving, MultiParamTypeClasses #-}
 
 module Assistant.Monad (
 	Assistant,

Command/Status.hs

@@ -5,7 +5,7 @@
  - Licensed under the GNU GPL version 3 or higher.
  -}
 
-{-# LANGUAGE PackageImports, BangPatterns #-}
+{-# LANGUAGE BangPatterns #-}
 
 module Command.Status where
 

Common.hs

@@ -1,5 +1,3 @@
-{-# LANGUAGE PackageImports #-}
-
 module Common (module X) where
 
 import Control.Monad as X hiding (join)

Utility/Path.hs

@@ -1,4 +1,3 @@
-{-# LANGUAGE PackageImports #-}
 {- path manipulation
  -
  - Copyright 2010-2011 Joey Hess <joey@kitenet.net>

Utility/State.hs

@@ -5,8 +5,6 @@
  - Licensed under the GNU GPL version 3 or higher.
  -}
 
-{-# LANGUAGE PackageImports #-}
-
 module Utility.State where
 
 import "mtl" Control.Monad.State.Strict

git-annex.cabal

@@ -76,7 +76,7 @@ Executable git-annex
   Include-Dirs: Utility
   C-Sources: Utility/libdiskfree.c Utility/libmounts.c
   CC-Options: -Wall
-  GHC-Options: -threaded -Wall
+  GHC-Options: -threaded -Wall -XPackageImports
   CPP-Options: -DWITH_CLIBS
 
   if flag(Production)