[Stackless] Bring Stackless.py in line with C based Stackless

[Richard Tew]

2009/12/2 Kristján Valur Jónsson <kristjan at ccpgames.com>:
> You are right.  My current plan is to 1) better abstract the round-robin scheduling away from the stackless core
> and
> 2) provide tasklet priority as an experimental patch to that.
>
> 1) is important, I think, because it will also help to untangle some messy parts of stackless, but there are many places to visit, and the project lost a bit of steam.  it's still going on, though.

On a related note, I wonder whether we should consider removing become
and capture.

Cheers,
Richard.