SLING-3511 Support selectors for pipeline configuration (patch supplied by Dirk Rudolph)

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1628637 13f79535-47bb-0310-9956-ffa450edef68
eliminate some warnings due to deprecated API methods

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1628638 13f79535-47bb-0310-9956-ffa450edef68