Because of integer conversion get_event has a minimum wait time of  1.0 second even if 0.0 < wait < 1.0
This is a problem for ioflo and halite in terms of tuning how fast events are pulled down when there are not
very many events happening otherwise on the master.
Merge pull request #10040 from SmithSamuelM/sam_fix_wait_get_event

Because of integer conversion get_event has a minimum wait time of  1.0 .second even if 0.0 < wait < 1.0