POE::Data::Envelope Integration Patch

Hola folks,

I was wanting this to go in to the 1.0 release, but since it didn't
make it not a big deal. Here is the promised integration patch with
the POE distribution. It touches the shipped filters, tests, and
ReadWrite to accommodate. I've add documentation to explain wtf is
going on and also marked it as experimental. I've svk pulled from the
trunk, and also tested the patch against a clean check out to verify
that everything is kosher.

And as always, if you see something that doesn't look right, please
let me know. There very well may be follow up patches as I work on my
own implementations based on this work and find something that doesn't
work as planned.

Comments welcome

-- 
Nicholas R. Perez

• POE::Data::Envelope Integration Patch by Nicholas Perez