HSEARCH-1454 Upgrade to Infinispan 6.0.0.Final and JGroups 3.4.1.Final
HSEARCH-1454 Updating documentation links to latest Infinispan website
HSEARCH-1365 Removing obsolete sub interface of BuildContext
HSEARCH-1365 Cleanup and javadocs
HSEARCH-1365 Fixing typo
HSEARCH-1365 Fixing wrong test assert import
HSEARCH-1365 Extracting serialization support (native Java and Avro) into standalone modules
HSEARCH-1365 Extracting remote backends (jms and jgroups) into dedicated modules
HSEARCH-1365 Refactoring ServiceManager and service contract

Removing ServiceProvider interface and implementations
Adding interfaces Service, Startable and Stoppable into service.spi sub package of engine
Adding new helper class AggregatedClassLoader
Adjusting all code to new service implementation

HSEARCH-1365 foo
HSEARCH-1365 Updating distribution bundle and fixing Javadoc generation warnings