make .noannex file prevent repo fixups

Avoid performing repository fixups for submodules and git-worktrees
when there's a .noannex file that will prevent git-annex from being
used in the repository.

This change is ok as long as the .noannex file is really going to prevent
git-annex from being used. But, init --force could override the file.
Which would result in the repo being initialized without the fixups
having run.

To avoid that situation decided to change init, to not let --force be used
to override a .noannex file. Instead the user can just delete the file.

Command/Reinit.hs

@@ -36,6 +36,6 @@ perform s = do
 		then return $ toUUID s
 		else Remote.nameToUUID s
 	storeUUID u
-	initialize' (AutoInit False) Nothing
+	initialize' Nothing
 	Annex.SpecialRemote.autoEnable
 	next $ return True