Add support for Files read notification, Files write Notification and pipes

```
The python-IOCP currently not supports files as unix would support, if you 
register a pipe or a device on a unix (eg.: linux), when reading is available 
the select, poll, epoll or kqueue will notify that.



```

Original issue reported on code.google.com by `marc...@fiveti.com` on 12 May 2012 at 8:48
