[MERGE] A hack to make urllib not call recv(1) lots and lots.

[Andrew Bennetts]

Robert Collins wrote:
> Oh, also - local tests without latency being added won't show the real
> impact of changing recv() call sizes - keeping the buffer empty is
> useful for high latency links.

Hmm, I might try testing a few times over the internet then.  I was hoping to
avoid the variability of the conference network, but now it's the sprint days of
PyCon that's probably not such a problem.

-Andrew.