Request for approval for 7123229: (coll) EnumMap.containsValue(null) returns true

[Neil Richards]

This is a request for approval to backport the following JDK 8 fix to
jdk7u-dev:

Bug: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7123229
Fix: http://hg.openjdk.java.net/jdk8/tl/jdk/rev/863a20b0bf08
Discussion: http://mail.openjdk.java.net/pipermail/core-libs-dev/2012-January/008869.html

Regards,
Neil

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