Coherence transactions implementation
* API should be OK, but in fact it's not working (throwing exceptions)
* committing implementation in order to not block further development, but the trait is disabled (commented out)
Enabling POF (by default) for Coherence
* POF should provide better performance than Java serialization
* Utils: conf/ directories should be on classpath sooner than library jars
Implemented querying in Hazelcast 3