hg: valhalla/valhalla/jdk: Fix: catch CNFE in ClassDynHelper

[maurizio.cimadamore at oracle.com]

Changeset: 85f81e27f6d3
Author:    mcimadamore
Date:      2016-02-22 15:46 +0000
URL:       http://hg.openjdk.java.net/valhalla/valhalla/jdk/rev/85f81e27f6d3

Fix: catch CNFE in ClassDynHelper
Fix: revert URLClassLoader to use ByteResource

! src/java.base/share/classes/java/net/URLClassLoader.java
! src/java.base/share/classes/valhalla/classdyn/ClassDynHelper.java