SAAJ impl 1.3.23 requires stax-ex to be imported (and not optional)


git-svn-id: https://svn.apache.org/repos/asf/servicemix/smx4/bundles/trunk@1613441 13f79535-47bb-0310-9956-ffa450edef68
Add saaj-impl to build


git-svn-id: https://svn.apache.org/repos/asf/servicemix/smx4/bundles/trunk@1613442 13f79535-47bb-0310-9956-ffa450edef68