Analysis won't terminate when dependees are registered individually

[errt]

See https://github.com/errt/reactive-async/tree/test/aggregation

With the change from https://github.com/errt/reactive-async/commit/6623f7e8704dfd11e83c3914be747fed495beb0f the TestTaintAnalysisRunner does not terminate anymore when run for the Java 7 Update 95 rt.jar. It did terminate in about 3 minutes before that change.