massive rn speedup code posted to net.sources

[David Sherman]

I mentioned in a previous posting that I had implemented buffered
stdout in rn, and it made a big difference in output at high speed.
Lots of people have asked me for the diffs, so I've posted them
to net.sources. If you're using patch, be warned that you'll have
to install speedup.c by hand, since it's a new file and not a diff.

Dave Sherman
The Law Society of Upper Canada
Toronto
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