439663 Allow mappings to be declared before servlet/filter
438204 leave IPv6 addresses [] wrapped in getServerName
Merge remote-tracking branch 'origin/master' into jetty-http2

Conflicts:
	jetty-http/src/main/java/org/eclipse/jetty/http/HttpParser.java
	jetty-server/src/main/java/org/eclipse/jetty/server/Request.java