[commit: bytestring] master: Fix some more import warnings (e14c4a7)

[Ian Lynagh]

Repository : ssh://darcs.haskell.org//srv/darcs/packages/bytestring

On branch  : master

http://hackage.haskell.org/trac/ghc/changeset/e14c4a70cfe8d206b34dd0fefdc70646e7a2f326

>---------------------------------------------------------------

commit e14c4a70cfe8d206b34dd0fefdc70646e7a2f326
Author: Duncan Coutts <duncan at community.haskell.org>
Date:   Thu Nov 17 00:59:28 2011 +0000

    Fix some more import warnings

>---------------------------------------------------------------

 .../builder/Data/ByteString/Lazy/Builder/Tests.hs  |    8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/tests/builder/Data/ByteString/Lazy/Builder/Tests.hs b/tests/builder/Data/ByteString/Lazy/Builder/Tests.hs
index 2b6e67a..d26bccb 100644
--- a/tests/builder/Data/ByteString/Lazy/Builder/Tests.hs
+++ b/tests/builder/Data/ByteString/Lazy/Builder/Tests.hs
@@ -18,7 +18,8 @@ import           Control.Applicative
 import           Control.Monad.State
 import           Control.Monad.Writer
 
-import           Foreign
+import           Foreign (Word, Word8, Word64, minusPtr)
+import           System.IO.Unsafe (unsafePerformIO)
 
 import           Data.Char (ord, chr)
 import qualified Data.DList      as D
@@ -39,7 +40,10 @@ import           Data.ByteString.Lazy.Builder.BasicEncoding.TestUtils
 import           Numeric (readHex)
 
 import           Control.Exception (evaluate)
-import           System.IO
+import           System.IO (openTempFile, hPutStr, hClose, hSetBinaryMode)
+#if MIN_VERSION_base(4,2,0)
+import           System.IO (hSetEncoding, utf8)
+#endif
 import           System.Directory
 
 import           TestFramework