deal with mtl/monads-tf conflict

I had been using -ignore-package monads-tf to deal with this, but
the XMPP library uses monads-tf, so that also ignores it. Instead,
use PackageImports to force use of mtl in my own code.

Annex.hs

@@ -5,7 +5,7 @@
  - Licensed under the GNU GPL version 3 or higher.
  -}
 
-{-# LANGUAGE GeneralizedNewtypeDeriving, TypeFamilies, MultiParamTypeClasses #-}
+{-# LANGUAGE PackageImports, GeneralizedNewtypeDeriving, TypeFamilies, MultiParamTypeClasses #-}
 
 module Annex (
 	Annex,
@@ -30,7 +30,7 @@ module Annex (
 	fromRepo,
 ) where
 
-import Control.Monad.State.Strict
+import "mtl" Control.Monad.State.Strict
 import Control.Monad.Trans.Control (StM, MonadBaseControl, liftBaseWith, restoreM)
 import Control.Monad.Base (liftBase, MonadBase)
 import System.Posix.Types (Fd)

Command/Status.hs

@@ -5,11 +5,11 @@
  - Licensed under the GNU GPL version 3 or higher.
  -}
 
-{-# LANGUAGE BangPatterns #-}
+{-# LANGUAGE PackageImports, BangPatterns #-}
 
 module Command.Status where
 
-import Control.Monad.State.Strict
+import "mtl" Control.Monad.State.Strict
 import qualified Data.Map as M
 import Text.JSON
 import Data.Tuple

Common.hs

@@ -1,9 +1,11 @@
+{-# LANGUAGE PackageImports #-}
+
 module Common (module X) where
 
 import Control.Monad as X hiding (join)
 import Control.Monad.IfElse as X
 import Control.Applicative as X
-import Control.Monad.State.Strict as X (liftIO)
+import "mtl" Control.Monad.State.Strict as X (liftIO)
 import Control.Exception.Extensible as X (IOException)
 
 import Data.Maybe as X

Makefile

@@ -1,6 +1,6 @@
 CFLAGS=-Wall
 GIT_ANNEX_TMP_BUILD_DIR?=tmp
-IGNORE=-ignore-package monads-fd -ignore-package monads-tf
+IGNORE=-ignore-package monads-fd
 BASEFLAGS=-Wall $(IGNORE) -outputdir $(GIT_ANNEX_TMP_BUILD_DIR) -IUtility
 
 # If you get build failures due to missing haskell libraries,

Utility/State.hs

@@ -5,9 +5,11 @@
  - Licensed under the GNU GPL version 3 or higher.
  -}
 
+{-# LANGUAGE PackageImports #-}
+
 module Utility.State where
 
-import Control.Monad.State.Strict
+import "mtl" Control.Monad.State.Strict
 
 {- Modifies Control.Monad.State's state, forcing a strict update.
  - This avoids building thunks in the state and leaking.