added Clock and Delay concept

results/overhead-findings.txt

...hroughput/MethodCallThoughputTimestampAnalysis15Test.java

...teetime/examples/throughput/methodcall/ConsumerStage.java

...eetime/examples/throughput/methodcall/FixedSizedPipe.java

...throughput/methodcall/MethodCallThroughputAnalysis13.java

...throughput/methodcall/MethodCallThroughputAnalysis15.java

.../throughput/methodcall/MethodCallThroughputAnalysis7.java

.../throughput/methodcall/MethodCallThroughputAnalysis8.java

...teetime/examples/throughput/methodcall/ProducerStage.java

...st/java/teetime/examples/throughput/methodcall/Stage.java

...e/examples/throughput/methodcall/stage/AbstractStage.java

...a/teetime/examples/throughput/methodcall/stage/Clock.java

...e/examples/throughput/methodcall/stage/CollectorSink.java

...a/teetime/examples/throughput/methodcall/stage/Delay.java

...eetime/examples/throughput/methodcall/stage/EndStage.java

.../examples/throughput/methodcall/stage/ObjectProducer.java

...eetime/examples/throughput/methodcall/stage/Pipeline.java