* Refactored iBatis based readers and writers to not utilize
SqlMapClientTemplate.
* Depricated all iBatis based readers and writers in favor of MyBatis's
native Spring support.
* Updated XStream support to 1.4.4 and Jettison to 1.2 to be in
alignment with Spring 4.
* Added the PooledEmbeddedDataSource to address the issue outlined in
SPR-11372.