Change the visibility of `JAXLLoop::select`
Change the visibility of `JAXLLoop::select`

I am writing a HipChat integration for Phabricator and I need to call `JAXLLoop::select` rather than `JAXLLoop::run`. The reason for this is that the polling mechanism is implemented on the Phabricator end rather than within JAXL itself.

frost-nzcr4/JAXL