[SPY-107] logic on checking timeout per operation is incorrect

Wed, 16 Jan 2013 02:02:26 -0600

    After seeing the IllegalArgumentException in a log, I re-thought through the series of events here.

    This flag on the op is known by user threads and the IO thread. Thus it
    is modified in these two different ways:

    * operation is created and enqueued
    * OperationFuture is returned
    * .get() is called on OF
     **timed out**

    * operation is removed from input queue
    * elapsed time is checked
      **timed out**

Couchbase

[SPY-107] logic on checking timeout per operation is incorrect