JsonRestProxy: added "maxBackoffTime" for exponential backoffs (TRIVIAL)
JsonRestProxy: set "-1" as "infinity" value for "maxRetries" (TRIVIAL)
runner_stress_test: fixed a comparison failing due to the reading of released variables
Runner: handle wakeup signals until the stdInSink has been detached from the MessageLoop, fixing the missing of wake ups (BUGFIX)
OutputSink: prevent "doClose" from being executed when "state" is already set
to "CLOSED" bugfix, fixing the double invocation of the onClose callback