418732 - Add whiteListByPath mode to IPAccessHandler

Fixed the contribution.

The PathMap changes were not correct as "" is the pattern for "/" path only.
Also removed the use of the lazy list
Merge remote-tracking branch 'origin/master' into jetty-9.1
fixed merge
Merge branch 'jetty-9.1' of ssh://git.eclipse.org/gitroot/jetty/org.eclipse.jetty.project into jetty-9.1