Move ChainedTransactionManager from spring-data commons to spring-tx

Spring-data common has a hidden gem: ChainedTransactionManager.
It is not mentioned in the reference documentation only in javadoc.
There is a good blog entry about it which describes why it is useful.

ChainedTransactionManager is in a package which doesn't have any dependency on anything else in spring-data. Basically it only depends on org.springframework.transaction from spring-tx.

Considering that it is a pretty general functionality, could it be moved (and documented) into spring-tx itself?