mod_cloud_notify: added code to respond to the new event "smacks-ack-delayed" issued by mod_smacks when acks are delayed for a certain amount of time. This allows to send out notification requests before the read timeout or connection close event really happens, thus allowing conversations to be smoother.

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summary: Storage benchmark tool
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To benchmark `mod_storage_internal`:

    prosodyctl mod_benchmark_storage internal

Does a number (aprox. 10000) of reads and writes and to the selected
storage driver and tells you how long it took.