HADOOP-6941. Support non-SUN JREs in UserGroupInformation (Devaraj Das via tgraves

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1441225 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-8346. Changes to support Kerberos with non Sun JVM (HADOOP-6941) broke SPNEGO (Devaraj Das via tgraves)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1441227 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-8251. Fix SecurityUtil.fetchServiceTicket after HADOOP-6941 (todd via tgraves)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1441230 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-8878. uppercase namenode hostname causes hadoop dfs calls with webhdfs filesystem and fsck to fail when security is on  (Arpit Gupta via tgraves)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1441236 13f79535-47bb-0310-9956-ffa450edef68
svn merge -c 1441239 FIXES: YARN-364. AggregatedLogDeletionService can take too long to delete logs. Contributed by Jason Lowe


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1441246 13f79535-47bb-0310-9956-ffa450edef68
merge -r 1199023:1199024 Merging from trunk to branch-0.23 to fix HDFS-2495

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