I have a new socket abstraction patch that should address the known
Windows socket/event bugs, but it's a little bigger than I thought it
would be, not quite ready, and now too late to expect people to review
for 15, so I think it should go into the next cycle. I've bounced
https://commitfest.postgresql.org/37/3523/ into the next CF. We'll
need to do something like 75674c7e for master.
