Dependency upgrades.

Spring Data JPA 1.4.1 -> 1.4.2 (Babbage SR1)
Hibernate 4.2.5.Final -> 4.2.6.Final
Lombok 0.12.0 -> 1.12.2
Upgraded to Spring Data JPA 1.5.0.BUILD-SNAPSHOT.
Moved to from @_(…) to @__(…) for Lombok.