Use git-annex init --version=6 to get v6 for now

Not ready to make it default because of the direct mode upgrade needing to
all happen at once.

Annex/Init.hs

@@ -57,8 +57,8 @@ genDescription Nothing = do
 	return $ concat [hostname, ":", reldir]
 #endif
 
-initialize :: Maybe String -> Annex ()
-initialize mdescription = do
+initialize :: Maybe String -> Maybe Version -> Annex ()
+initialize mdescription mversion = do
 	{- Has to come before any commits are made as the shared
 	 - clone heuristic expects no local objects. -}
 	sharedclone <- checkSharedClone
@@ -68,7 +68,7 @@ initialize mdescription = do
 	ensureCommit $ Annex.Branch.create
 
 	prepUUID
-	initialize'
+	initialize' mversion
 	
 	initSharedClone sharedclone
 
@@ -77,16 +77,18 @@ initialize mdescription = do
 
 -- Everything except for uuid setup, shared clone setup, and initial
 -- description.
-initialize' :: Annex ()
-initialize' = do
+initialize' :: Maybe Version -> Annex ()
+initialize' mversion = do
 	checkLockSupport
 	checkFifoSupport
 	checkCrippledFileSystem
 	unlessM isBare $
 		hookWrite preCommitHook
 	setDifferences
-	setVersion currentVersion
-	configureSmudgeFilter
+	unlessM (isJust <$> getVersion) $
+		setVersion (fromMaybe defaultVersion mversion)
+	whenM versionSupportsUnlockedPointers
+		configureSmudgeFilter
 	ifM (crippledFileSystem <&&> not <$> isBare)
 		( do
 			enableDirectMode
@@ -115,7 +117,7 @@ ensureInitialized :: Annex ()
 ensureInitialized = getVersion >>= maybe needsinit checkUpgrade
   where
 	needsinit = ifM Annex.Branch.hasSibling
-			( initialize Nothing
+			( initialize Nothing Nothing
 			, error "First run: git-annex init"
 			)