apache/spark — pull request #2611 by scwf (2014-10-01 08:08:52+00:00)
Title: [SPARK-3756] check exception is caused by an address-port collision properly

Jetty server use MultiException to handle exceptions when start server
refer https://github.com/eclipse/jetty.project/blob/jetty-8.1.14.v20131031/jetty-server/src/main/java/org/eclipse/jetty/server/Server.java

So in ```isBindCollision``` add the logical to cover MultiException