OPENIG-200 (CR-4008) Introduce Java bean support in EL Resolvers
* Standard BeanELResolver is wrapped into our own Resolver API
** Any Object subclass can be used in the resolver
* Resolvers have been slightly modified to lookup a Resolver for Object.class
* Added tests

git-svn-id: https://svn.forgerock.org/openig@362 dbb9e58e-28e6-4ce0-90e8-f11d9605b710