YARN-2671. Fix the Jira number in the change log.

(cherry picked from commit 5b12df6587eb4f37d09c9ffc35a0ea59694df831)
MAPREDUCE-6122. TestLineRecordReader may fail due to test data files checked out of git with incorrect line endings. Contributed by Chris Nauroth.

(cherry picked from commit 684170d5efdc11bcd9967168f44a428d1a72af3c)
(cherry picked from commit 85a2b907407c7719a31c64d3747810263b3ec57d)
MAPREDUCE-6122. Fix CHANGES.txt.

(cherry picked from commit 2f0166db560b180e8d07c10ba9ad4bfaf2aa7b36)
(cherry picked from commit 61be28f501ba3de0915c165c9d43fa38463722c0)
MAPREDUCE-6123. TestCombineFileInputFormat incorrectly starts 2 MiniDFSCluster instances. Contributed by Chris Nauroth.

(cherry picked from commit 777877d079ecb025c293deac741800800e413179)
(cherry picked from commit f6278cbac50522302ee7ad3cbbe21d0aeefa76d8)
YARN-2662. TestCgroupsLCEResourcesHandler leaks file descriptors. Contributed by Chris Nauroth.

(cherry picked from commit d3afd730acfa380ab5032be5ee296c5d73744518)
(cherry picked from commit b81641a31050b6a5cf5db3af636125e0617ffd56)
YARN-2583. Modified AggregatedLogDeletionService to be able to delete rolling aggregated logs. Contributed by Xuan Gong.

(cherry picked from commit cb81bac0029fce3a9726df3523f0b692cd3375b8)