Re: WIP: a way forward on bootstrap data

Pushed 0001 with some changes of my own.  I'm afraid I created a few
conflicts for the later patches in your series; please rebase.

I don't think we introduced anything that would fail on old Perls, but
let's see what buildfarm has to say.

Others: Now is the time to raise concerns related to the proposed file
formats and tooling, so please do have a look when you have a moment.
At this stage, the proposed data format seems a good choice to me.

Thanks

-- 
Álvaro Herrera                https://www.2ndQuadrant.com/
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