allow to build when sandi is installed (don't use it yet)

Assistant/XMPP.hs

@@ -21,7 +21,7 @@ import qualified Data.Map as M
 import Data.ByteString (ByteString)
 import qualified Data.ByteString as B
 import Data.XML.Types
-import qualified Codec.Binary.Base64 as B64
+import qualified "dataenc" Codec.Binary.Base64 as B64
 
 {- Name of the git-annex tag, in our own XML namespace.
  - (Not using a namespace URL to avoid unnecessary bloat.) -}

Utility/Base64.hs

@@ -7,7 +7,7 @@
 
 module Utility.Base64 (toB64, fromB64Maybe, fromB64) where
 
-import Codec.Binary.Base64
+import "dataenc" Codec.Binary.Base64
 import Data.Bits.Utils
 import Control.Applicative
 import Data.Maybe