Adding MongoDBEntry
Addapting to support MongoDBEntry.
XML Parser added
Adding two more attributes to MongoDBStoreConfigurations
Adapting MongoDBStore to be able to use MongoDBEntry
XSD of CacheStoreConfig added
Configuration file to locate the XML Parser added
Correcting MongoDBStoreConfigurationBuilderTest
Removing gson / using infinispan 6.x last snapshot.