YARN-2224. Fix CHANGES.txt. This was committed as YARN-2204 before.

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Merge r1609584 from trunk. YARN-2088. Fixed a bug in GetApplicationsRequestPBImpl#mergeLocalToBuilder. Contributed by Binglin Chang

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YARN-2269. Remove external links from YARN UI. Contributed by Craig Welch


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Merge r1609594 from trunk. Moved few YARN entries in CHANGES.txt from 2.5 to 2.6

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HDFS-6640. Merge change r1609603 from trunk.

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YARN-2022 Preempting an Application Master container can be kept as least priority when multiple applications are marked for preemption by ProportionalCapacityPreemptionPolicy (Sunil G via mayank)
svn merge --ignore-ancestry -c 1607227 ../../trunk/


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HADOOP-10815. Merging change r1609588 from trunk to branch-2.

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HDFS-5202. Merging change r1609618 from trunk to branch-2.

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