Periodically flush git command queue, to avoid boating memory usage too much.

Since the queue is flushed in between subcommand actions being run,
there should be no issues with actions that expect to queue up some stuff
and have it run after they do other stuff. So I didn't have to audit for
such assumptions.

Annex.hs

@@ -13,10 +13,7 @@ module Annex (
 	eval,
 	getState,
 	changeState,
-	gitRepo,
-	queue,
-	queueRun,
-	queueRunAt,
+	gitRepo
 ) where
 
 import Control.Monad.State
@@ -25,7 +22,6 @@ import qualified GitRepo as Git
 import qualified GitQueue
 import qualified BackendClass
 import qualified RemoteClass
-import Utility
 
 -- git-annex's monad
 type Annex = StateT AnnexState IO
@@ -93,26 +89,3 @@ changeState a = do
 {- Returns the git repository being acted on -}
 gitRepo :: Annex Git.Repo
 gitRepo = getState repo
-
-{- Adds a git command to the queue. -}
-queue :: String -> [CommandParam] -> FilePath -> Annex ()
-queue command params file = do
-	state <- get
-	let q = repoqueue state
-	put state { repoqueue = GitQueue.add q command params file }
-
-{- Runs (and empties) the queue. -}
-queueRun :: Annex ()
-queueRun = do
-	state <- get
-	let q = repoqueue state
-	g <- gitRepo
-	liftIO $ GitQueue.run g q
-	put state { repoqueue = GitQueue.empty }
-
-{- Runs the queue if the specified number of items have been queued. -}
-queueRunAt :: Integer -> Annex ()
-queueRunAt n = do
-	state <- get
-	let q = repoqueue state
-	when (GitQueue.size q >= n) queueRun