Bugfix: inverted comparison
More verbose error handling for slave index
* Logging stressors/checker records status
* Check for no-progress on checker record basis
Configs set to empty maps instead of null
* HTML reporter would crash
Naming JMX monitor threads, awaiting termination
Reflection-based toString for DistStageAck
Fixed generator for words longer than total size
Fixed the check on ManyIntegersObjectGenerator
Changes related to better memory management of the service:
* moved release logic from ScenarioCleanupStage to new ScenarioDestroyStage (configured in <destroy />)
* ScenarioDestroyStage is automatically inserted after the last user-stage but before ScenarioCleanupStage
* all stages on Slave but the ScenarioCleanupStage are executed in separate thread: otherwise we could leak memory through ThreadLocals
* ScenarioCleanupStage is executed in main thread but cannot use any traits: service was already destroyed
* added some tweaks to Infinispan and Coherence services to force shutdown of some threads
* unfinished threads can be stopped using Thread.stop()
* ScenarioInit got property for preparing heap dump