SLING-3403 Implementing new API plus:

* Ensure deployment on Servlet API 2 and 3 containers
* Support Servlet API 3 ServletContext API
* Fully parse request parameters for uniform encoding support

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1570136 13f79535-47bb-0310-9956-ffa450edef68
SLING-3403 Remove unwanted patch file

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1570137 13f79535-47bb-0310-9956-ffa450edef68