implement 3 level trust storage in trust.log

Command/Untrust.hs

@@ -7,14 +7,11 @@
 
 module Command.Untrust where
 
-import Control.Monad.State (liftIO)
-import Control.Monad (when)
-
 import Command
-import qualified Annex
 import qualified GitRepo as Git
 import qualified Remotes
 import UUID
+import Trust
 import Messages
 
 command :: [Command]
@@ -34,11 +31,5 @@ start name = do
 perform :: Git.Repo -> CommandPerform
 perform repo = do
 	uuid <- getUUID repo
-	trusted <- getTrusted
-	when (elem uuid trusted) $ do
-		setTrusted $ filter (\u -> u /= uuid) trusted
-		g <- Annex.gitRepo
-		logfile <- trustLog
-		liftIO $ Git.run g ["add", logfile]
-		liftIO $ Git.run g ["commit", "-q", "-m", "git annex untrust", logfile]
+	trustSet uuid UnTrusted
 	return $ Just $ return True