[perl #61290] [BIG] can't peek on stdin

[Allison Randal via RT]

On Tue Dec 23 14:08:43 2008, chromatic at wgz.org wrote:
> 
> We should support this; how about upgrading the IO PMC to buffered
> reads when
> we detect a peek?  Here's a patch that makes the test pass for me.
> Any objections, anyone else?

A reasonable solution, go ahead.

Please commit the formatting changes to src/io/portable.c separate from
the functional changes to src/io/buffer.c.

Allison