make "git annex help options" work outside a git repo

Option parsing for commands that run outside git repos is still screwy,
as there is no Annex monad and so the flags cannot be passed in. But,
any remaining parameters can be, which is enough for this fix.

Command/Help.hs

@@ -23,20 +23,24 @@ import GitAnnex.Options
 import System.Console.GetOpt
 
 def :: [Command]
-def = [noCommit $ noRepo showGeneralHelp $ dontCheck repoExists $
+def = [noCommit $ noRepo startNoRepo $ dontCheck repoExists $
 	command "help" paramNothing seek SectionQuery "display help"]
 
 seek :: [CommandSeek]
 seek = [withWords start]
 
 start :: [String] -> CommandStart
-start ["options"] = do
-	liftIO showCommonOptions
-	stop
-start _ = do
-	liftIO showGeneralHelp
+start params = do
+	liftIO $ start' params
 	stop
 
+startNoRepo :: CmdParams -> IO ()
+startNoRepo = start'
+
+start' :: [String] -> IO ()
+start' ["options"] = showCommonOptions
+start' _ = showGeneralHelp
+
 showCommonOptions :: IO ()
 showCommonOptions = putStrLn $ usageInfo "Common options:" options