[Request] Smart Polling

[wdahlenburg]

When the poll count changes each thread should respond within a few seconds to determine if the current time slept is greater than the new poll time. If so, then stop sleeping and poll.

This issue arises from the fact that TimeUnit.SECONDS.sleep(burp.BurpExtender.pollTime); is called. Instead I should sleep for a second at a time and add to a sleep counter. This allows each thread to not be stuck sleeping until the old poll duration is complete.