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
Adding new helper class AggregatedClassLoader
Adjusting all code to new service implementation