Update changelog and readme.md in preparation of 4.0.0.Beta1 release
[maven-release-plugin] prepare release 4.0.0.Beta1
[maven-release-plugin] prepare for next development iteration
OGM-252 Migrate to Hibernate ORM 4.1.7
OGM-253 Update MongoDB Java Driver to 2.9.0
OGM-250 Update to Infinispan 5.2.0.Beta4
OGM-250 Allow for duplicate JMS domains
OGM-204 Remove @SkipByGridDialect(Infinispan) to workaround (solved) Infinispan bug
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