410405 Avoid NPE for requestDispatcher(../)

Test double encoded dot dot
Merge branch 'jetty-8' of ssh://git.eclipse.org/gitroot/jetty/org.eclipse.jetty.project into jetty-8
409449 Ensure servlets, filters and listeners added via dynamic registration, annotations or descriptors are cleaned on context restarts
Merge remote-tracking branch 'origin/jetty-8'

Conflicts:
	jetty-server/src/main/java/org/eclipse/jetty/server/handler/ContextHandler.java
	jetty-servlet/src/main/java/org/eclipse/jetty/servlet/ServletContextHandler.java
	jetty-servlet/src/main/java/org/eclipse/jetty/servlet/ServletHandler.java
	jetty-webapp/src/main/java/org/eclipse/jetty/webapp/WebAppContext.java
Merge branch 'master' of ssh://git.eclipse.org/gitroot/jetty/org.eclipse.jetty.project