Merge remote-tracking branch 'origin/jetty-8'

Conflicts:
	jetty-servlets/src/test/java/org/eclipse/jetty/servlets/ProxyServletTest.java
	jetty-websocket/src/main/java/org/eclipse/jetty/websocket/WebSocketFactory.java
	jetty-websocket/src/test/java/org/eclipse/jetty/websocket/helper/SafariD00.java