Fixed some AspectJ compiler warnings.

git-svn-id: https://svn.apache.org/repos/asf/webservices/axiom/trunk@1609925 13f79535-47bb-0310-9956-ffa450edef68
Refactor the named node helpers into aspects.


git-svn-id: https://svn.apache.org/repos/asf/webservices/axiom/trunk@1609939 13f79535-47bb-0310-9956-ffa450edef68