Fix version in the pom.xml from HADOOP-11007 for branch-2.
HADOOP-11169. Fix DelegationTokenAuthenticatedURL to pass the connection Configurator to the authenticator. (Arun Suresh via wang)

(cherry picked from commit b2f619752355d4ef6733935c020f57c8a26d82e1)
HADOOP-11172. Improve error message in Shell#runCommand on OutOfMemoryError. (Yongjun Zhang via wang)

(cherry picked from commit 4b2834898cbcc66ffbf01b2fb10375e79a50d538)
Fixup for CHANGES.txt

(cherry picked from commit 0263656247f31a67347bea4b702869ddce21e7c4)
HDFS-7128. Decommission slows way down when it gets towards the end. Contributed by Ming Ma.

(cherry picked from commit 80cb472620f0a7889e311ca32212a42b95c6794e)
HADOOP-11166. Remove ulimit from test-patch.sh.

(cherry picked from commit 60f0f6fcde406ed15e9079e0ff34df744b09a844)