HSEARCH-1653 Revision Avro serialization protocol as v1.1
HSEARCH-1653 Make Avro schema 1.1 be the default
HSEARCH-1650 LuceneWorkSerializerImpl ignores FlushLuceneWork
HSEARCH-1653 Refactor Avro Serialization to manage multiple protocols and parse schemas lazily
HSEARCH-1651 Backend configuration property name is documented incorrectly
Prepare release of version 5.0.0.Alpha6
[maven-release-plugin] prepare release 5.0.0.Alpha6
[maven-release-plugin] prepare for next development iteration
HSEARCH-1580 Take into account @ContainedIn annotations even if there is no corresponding @IndexedEmbedded

This patch brings back the behavior observed before a refactoring committed during the 4.4 cycle and later
fixed in 4.4 and 4.5 - see HSEARCH-1573 for the related history.
HSEARCH-1660 Upgrade JGroups to 3.5.0.Final