412466 Improved search for unset JETTY_HOME
412442 Avoid connection timeout after FIN-FIN close
Merge remote-tracking branch 'origin/master' into jetty-9.1

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