[Twisted-Python] Windows IOCP reactor

[Pavel Pergamenshchik]

Support for Windows completion ports is now in Twisted.
Unlike win32reactor, IOCP allows a Twisted application to have a nearly unlimited amount of open connections. Performance improvements and process running support will be coming shortly. You can use this reactor
by installing it with:

from twisted.internet import iocp
iocp.install()

or by using "--reactor=iocp" parameter to trial or twistd.
Suggestions are welcome!