Add comment improvements

Help code readers understand how embedded and data storage optimization
is done in MongoDB dialect
OGM-255 Add project to assemble JBoss AS modules
OGM-255 Add Integration test project and test for OGM JBoss AS module with infinispan
OGM-255 Add EhCache dedicated module
OGM-255 Add test for EhCache dedicated module
OGM-257 Update to Hibernate ORM 4.1.9.Final
OGM-257 Add methods to NoopStatement to make it compatible with JDK 1.7
OGM-258 Upgrade to Infinispan 5.2.0.CR1
OGM-260 Upgrade to Hibernate Search 4.2.0.CR1
Update changelog and readme.md in preparation of 4.0.0.Beta2 release
[maven-release-plugin] prepare release 4.0.0.Beta2
[maven-release-plugin] prepare for next development iteration
OGM-122 Add project structure for Cassandra
OGM-122 Add configuration files
OGM-122 Add connection support for Cassandra
OGM-122 Expose table and id from EntityKey
OGM-122 Write (hardcoded) connection and schema creation in CassandraDatastoreProvider
OGM-122 Add work in progress on Cassandra dialect for CQL 2
OGM-128 Make Cassandra datastore configurable
OGM-128 Make sure Keyspace and url are set in hibernate.properties and don't enforce HBM2DDL in test harness