graceful shutdown#178

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vishalchangrani wants to merge 2 commits intomochi:mainfrom

vishalchangrani:graceful_shutdown

Commits on Jul 11, 2016

Gracefully shutting down active sockets in mochiweb_socket_server when a shutdown_delay is provided
vishalchangraniericsson
committed

Commits on Sep 2, 2016

Removing polling for graceful shutdown and removing timer:sleep for unit test
vishalchangraniericsson
committed