Added "exposeAccessContext" flag JndiRmiClientInterceptor/ProxyFactoryBean (for WebLogic)

Issue: SPR-9428
EhCacheManagerFactoryBean applies cacheManagerName ahead of creation (for EHCache 2.5 compatibility)

Issue: SPR-9171
Further preparations for 3.2.1
AbstractDriverBasedDataSource does not rely on Properties chaining anymore

Issue: SPR-9461