[Distutils] abstract build system approaches redux

[Donald Stufft]

I'm hoping to get some time to finish fleshing mine out this weekend. I've been unable to do much except in small spurts this last week due to some complications from a temporary filling after a root canal last week (it threw my bite off and I've been having jaw pain + feeling of drunkiness + extreme exhaustion). The temporary filling is coming out tomorrow so hopefully that will be cleared up by then. 

Sent from my iPhone

> On Mar 2, 2016, at 7:43 PM, Robert Collins <robertc at robertcollins.net> wrote:
> 
> We have three draft designs - from Nathaniel (517), Donald (unnumberd)
> and mine (516).