put in utf8 forcing workaround

Haskell's IO layer crashes on characters > 255 when in a non-unicode (latin1)
locale. Until Haskell gets better behavior, put in an admittedly ugly
workaround for that: git-annex forces utf8 output mode no matter what
locale is selected. So if you use a non-utf8 locale, your filenames with
characters > 127 will not be displayed as you'd expect. But at least it
won't crash.

CmdLine.hs

@@ -11,6 +11,7 @@ module CmdLine (
 	shutdown
 ) where
 
+import System.IO
 import System.IO.Error (try)
 import System.Console.GetOpt
 import Control.Monad.State (liftIO)
@@ -30,6 +31,7 @@ import UUID
 {- Runs the passed command line. -}
 dispatch :: Git.Repo -> [String] -> [Command] -> [Option] -> String -> IO ()
 dispatch gitrepo args cmds options header = do
+	forceUtf8
 	state <- Annex.new gitrepo allBackends
 	(actions, state') <- Annex.run state $ parseCmd args header cmds options
 	tryRun state' $ [startup, upgrade] ++ actions ++ [shutdown]