ISPN-4104 Generic store cache child creation fails

* Added ConfiguredBy annotation
** This allows a Cachestore to tell what Configuration to use
* Updated existing cache stores and loaders to define this
* Added parsing support for embedded and server configuration
* Added tests to verify generic loader definitions
* Refactored base configuration builder to reduce code copy for read
ISPN-4074 Introduce a doclet to filter out private APIs from the JavaDoc

- Add package-info.java file for all public packages which need to be documented
- Separate interfaces from implementations by creating appropriate "impl" packages
- Remove legacy classes and interfaces which have moved to commons