full autostart support

git annex assistant --autostart will start separate daemons in each
listed autostart repo

running the webapp outside any git-annex repo will open it on the
first listed autostart repo

Locations/UserConfig.hs

@@ -0,0 +1,26 @@
+{- git-annex user config files
+ -
+ - Copyright 2012 Joey Hess <joey@kitenet.net>
+ -
+ - Licensed under the GNU GPL version 3 or higher.
+ -}
+
+module Locations.UserConfig where
+
+import Utility.FreeDesktop
+
+import System.FilePath
+
+{- ~/.config/git-annex/file -}
+userConfigFile :: FilePath -> IO FilePath
+userConfigFile file = do
+	dir <- userConfigDir
+	return $ dir </> "git-annex" </> file
+
+autoStartFile :: IO FilePath
+autoStartFile = userConfigFile "autostart"
+
+{- The path to git-annex is written here; which is useful when cabal
+ - has installed it to some aweful non-PATH location. -}
+programFile :: IO FilePath
+programFile = userConfigFile "program"