implemented unfinished generic signal concept;

...ant/methodcallWithPorts/framework/core/AbstractStage.java

...ariant/methodcallWithPorts/framework/core/OutputPort.java

.../variant/methodcallWithPorts/framework/core/Pipeline.java

...ant/methodcallWithPorts/framework/core/RunnableStage.java

...me/variant/methodcallWithPorts/framework/core/Signal.java

...ant/methodcallWithPorts/framework/core/StageWithPort.java

...nt/methodcallWithPorts/framework/core/pipe/DummyPipe.java

...ariant/methodcallWithPorts/framework/core/pipe/IPipe.java

...hodcallWithPorts/framework/core/pipe/IntraThreadPipe.java

...ant/methodcallWithPorts/framework/core/pipe/SpScPipe.java

...ant/methodcallWithPorts/framework/core/signal/Signal.java

...odcallWithPorts/framework/core/signal/StartingSignal.java

...allWithPorts/framework/core/signal/TerminatingSignal.java

...callWithPorts/framework/core/signal/ValidatingSignal.java

...orts/framework/core/validation/InvalidPortConnection.java

...methodcallWithPorts/stage/ElementDelayMeasuringStage.java

...dcallWithPorts/stage/ElementThroughputMeasuringStage.java

...java/teetime/variant/methodcallWithPorts/stage/Relay.java

...ariant/methodcallWithPorts/stage/basic/merger/Merger.java

...eetime/variant/methodcallWithPorts/stage/io/DbReader.java