Apply an upstream patch to fix Zero.

http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/rev/8bd024c567e7

This patch complements the following commits.

http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/rev/f8a45a60bc6b
http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/rev/b1606443958a
http://hg.openjdk.java.net/jdk8u/jdk8u/jdk/rev/a3e756231625

Reported by: Mikaël Urankar (mikael.urankar@gmail.com) (via swills)