kgio 2.4.0 - portability fixes and more
== All supported platforms (*nix + MRI 1.8+, Rubinius)
* OpenBSD (and possibly other *BSD) fixes, thanks to Jeremy Evans.
* kgio_accept and kgio_tryaccept now take an optional second argument
for flags (like the accept4() flags argument).
== Ruby 1.9-only things
* Kgio.poll no longer raises Errno::EINTR to match IO.select.
== Ruby 1.9 trunk things
* close() on an active FD in a different thread is better
handled/detected.
* copy-on-write for strings is properly triggered