[MERGE][BUG #214894] Repo.get_parent_map() correctness with mismatched servers

[Ian Clatworthy]

John Arbash Meinel wrote:

> Specifically, the bug is in the RemoteRepository compatibility code,
> when the
> remote server is <v1.2. It switched to an alternate api which didn't
> actually
> match 100% the current api.

bb: approve

I think this is safe for 1.4 myself. The code is clearly isolated to
only trigger when a pre 1.2 server is detected.

Ian C.