rsocket Issue #2

[Hefty, Sean]

> The `rpoll` behaviour I observe is clearly different than regular
> `poll` ( which will wake up all waiters ). Is this a bug, or expected
> behaviour of the thread-less rsocket implementation?

This is likely an implementation issue, but the intent should be to mimic poll behavior here.  So I would consider this a bug, and it would take some work to figure out how to handle this in a way that doesn't result in races.

- Sean