Move dir-spec-v2 to attic?

Hi Nick. Moving this from irc...

14:39 < atagar> nickm: Thoughts about moving the dir-spec-v2 spec to the attic?
  A couple people have been confused at having dir-spec and dir-spec-v2 picking
  the later (despite wanting the former since it's v3).

14:43  * phw was one of these people.

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