Pre-Announce : POE::Wheel::Sendfile

Greeting POElings,

Following my work with Sys::Sendfile in the HTTP component, I decided that it
would be useful enough on it's own.  So I've concocted POE::Wheel::Sendfile.

It is a straight sub-class of POE::Wheel::Sendfile that can use Sys::Sendfile
to efficiently send a file over a network connection.

The initial draft is currently on the CPAN:

    http://search.cpan.org/perldoc?POE::Wheel::Sendfile

TODO:
 - tests for the fall-back mechanism;
 - test with each loop, just in case;
 - POE::Wheel::Sendfile could be installed even though Sys::Sendfile isn't.  I
   need a good way to signify this in Makefile.PL.

-Philip