[hibernate-dev] <sql-result-set-mapping/> handling in JPAOverriddenAnnotationReader

I had to hook into processing <sql-result-set-mapping/> within JPAOverriddenAnnotationReader so I took the opportunity to reorganize the code. As part of that there were 2 pieces of code in particular that I could not figure out the purpose of: 1) We were excepting <result-class/> as a sub-element of <sql-result-set-mapping/>. The code even had a comment already questioning this. This element is not part of the JPA orm.xsd. For now I removed support for this commenting out the code. If you know why it was there, or see problems correct it or give me a shout. 2) We were also processing an attribute named 'result-set-mapping' on <sql-result-set-mapping/>. Not sure what this is about at all. Again for now I just commented it out.