SPR-6939 - XStreamMarshaller + JsonHierarchicalStreamDriver + JsonWriter.DROP_ROOT_MODE produce empty output

SPR-6119 - Add slf4j dependency back to orm's pom.xml but in test scope as it is needed to run tests that use Hibernate
SPR-5956 - Remove commons-logging dependency definitions in pom.xml for all but spring-core so as to make exclusion rule easier for user who use slf4j

Updating POMs to contain Junit & EasyMock version numbers. Apparently, the maven ant tasks cannot resolve our parent pom.

Place parent pom in publicly accessible directory (org.sf.spring-parent).  
Create a component list pom in org.sf.spring-library.

SPR-5385, SPR-5301 - initial pass completed of POMs for maven central repository upload. N.B. Can not build spring with these POMs.
Cleanup remains to meet maven central metadata requirements