block_types: copy indirect ptrs on a dirblock deep copy
block_types: copy indirect ptrs on a dirblock deep copy

Issue: KBFS-3302

keybase/client,keybase/kbfs,keybase/client,keybase/client,keybase/client,keybase/client,keybase/kbfs,keybase/kbfs,keybase/client,keybase/client,keybase/client,keybase/client,keybase/kbfs,keybase/client,keybase/client,keybase/client