hg: jdk9/sandbox/jdk: 8071667: HashMap.computeIfAbsent() adds entry that HashMap.get() does not find.

[chris.hegarty at oracle.com]

Changeset: 0c3aa853064e
Author:    bchristi
Date:      2015-04-02 12:33 -0700
URL:       http://hg.openjdk.java.net/jdk9/sandbox/jdk/rev/0c3aa853064e

8071667: HashMap.computeIfAbsent() adds entry that HashMap.get() does not find.
Summary: Throw ConcurrentModificationException from computeIfAbsent() & friends
Reviewed-by: chegar, psandoz

! src/java.base/share/classes/java/util/HashMap.java
! src/java.base/share/classes/java/util/Hashtable.java
! src/java.base/share/classes/java/util/Map.java
+ test/java/util/Map/FunctionalCMEs.java