[perl #38239] [PATCH] Clean up after examples/pir/io.pir

[Bob Rogers]

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examples/pir/io.pir leaves the "tmp_example_io.tmp" in the cwd, even
when run as the first t/examples/pir.t test. Rather than fixing it
there, this seemed like a great opportunity to add a small OS example.

-- Bob Rogers
http://rgrjr.dyndns.org/