SLING-3868 : Provide a way to get/set a resource resolver associated to the current threadSLING-3868 : Provide a way to get/set a resource resolver associated to the current thread

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1620281 13f79535-47bb-0310-9956-ffa450edef68