all commands building except for assistant

also, changed ConfigValue to a newtype, and moved it into Git.Config.

Git/AutoCorrect.hs

@@ -46,7 +46,7 @@ fuzzymatches input showchoice choices = fst $ unzip $
  -}
 prepare :: String -> (c -> String) -> [c] -> Maybe Repo -> IO ()
 prepare input showmatch matches r =
-	case readish . decodeBS' . Git.Config.get "help.autocorrect" "0" =<< r of
+	case readish . fromConfigValue . Git.Config.get "help.autocorrect" "0" =<< r of
 		Just n
 			| n == 0 -> list
 			| n < 0 -> warn Nothing