One-shot semantics in GHC event manager

[Kazu Yamamoto (=?iso-2022-jp?B?GyRCOzNLXE9CSScbKEI=?=)]

Ben,

> This may be due to lacking INLINEs on definitions added in
> GHC.Event.Internal [1]. I'm currently in the middle of reproducing these
> results on an EC2 instance to confirm this. So far the results look much
> more consistent than my previous attempts at benchmarking on my own
> hardware.

If using
https://github.com/bgamari/packages-base/commits/event-rework
is a right way, please push the INLINE commit to this repo?
I will try it gain.

--Kazu