added notify and interrupt in SpScPipe

src/main/java/teetime/framework/AbstractInterThreadPipe.java

src/main/java/teetime/framework/AbstractStage.java

src/main/java/teetime/framework/Analysis.java

src/main/java/teetime/framework/RunnableConsumerStage.java

src/main/java/teetime/framework/Stage.java

src/main/java/teetime/framework/pipe/PipeFactoryLoader.java

src/main/java/teetime/framework/pipe/SpScPipe.java

src/main/java/teetime/stage/io/EveryXthPrinter.java

...examples/experiment15/MethodCallThroughputAnalysis15.java

...examples/experiment16/MethodCallThroughputAnalysis16.java

src/performancetest/java/teetime/framework/OldPipeline.java

src/test/java/teetime/framework/pipe/SpScPipeTest.java