add: In v6 mode, acts on modified files.

Same as was done in direct mode, except in v6 mode add always adds files
locked, so

Command/Add.hs

@@ -66,10 +66,9 @@ seek o = allowConcurrentOutput $ do
 		, startSmall file
 		)
 	go $ withFilesNotInGit (not $ includeDotFiles o)
-	ifM isDirect
+	ifM (versionSupportsUnlockedPointers <||> isDirect)
 		( go withFilesMaybeModified
-		, unlessM versionSupportsUnlockedPointers $
-			go withFilesOldUnlocked
+		, go withFilesOldUnlocked
 		)
 
 {- Pass file off to git-add. -}

debian/changelog

@@ -11,6 +11,7 @@ git-annex (6.20151225) unstable; urgency=medium
     newly initialized repository; it will add files to the annex.
   * unlock, lock: In v6 mode, unlocking a file changes it from a symlink to a
     pointer file, and this change can be committed to the git repository.
+  * add: In v6 mode, acts on modified files.
  
  -- Joey Hess <id@joeyh.name>  Tue, 08 Dec 2015 11:14:03 -0400