work around epoll() bug, see #3176

√: Removing selectNow and select(timeout) from Akka IO config to use only unbounded selects
RK: rebase it onto current master and remove AkkaSelector verbiage
Merge pull request #1355 from akka/wip-3176-work-around-epoll-bug-√

 #3176 - Adding an AkkaSelector that will work around the EPoll bug, as ...