Preparing for bug-fix 2.0.4-alpha release.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1453886 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4560. Webhdfs cannot use tokens obtained by another user (daryn)



git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1453955 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-4885: attempt removing explicit cmd /c
MAPREDUCE-4885: clean up pom.xml
MAPREDUCE-4885: attempt removing cmd /c from TestFileArgs
MAPREDUCE-4885: clean up System.out calls
MAPREDUCE-4885: reinstance cmd /c and add comments
MAPREDUCE-4885: JavaDocs for TestStreaming#setTestDir
MAPREDUCE-4885: attempt adding cmd /c to fix TestStreamingTaskLog
HADOOP-9374. Add tokens from -tokenCacheFile into UGI (daryn)


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1454019 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4546. Use DFSUtil.getSpnegoKeytabKey() to get the spnego keytab key in secondary namenode and namenode http server. Contributed by Arpit Agarwal.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1454021 13f79535-47bb-0310-9956-ffa450edef68
Change the jira number of commit 1454021 to HDFS-4565. Attribute it to the right contributor, Arpit Gupta

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1454027 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4566. Webdhfs token cancelation should use authentication (daryn)


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1454059 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-4885: increase test timeout for TestStreamingTaskLog#testStreamingTaskLogWithHadoopCmd
MAPREDUCE-4885: attempt just an extra blank line in cmd scripts
MAPREDUCE-4885: nope, back to keeping an extra @rem statement in the cmd scripts
MAPREDUCE-4885: attempt to simplify change in TestMultipleArchiveFiles#createInput
MAPREDUCE-4885: attempt to simplify TestMultipleCachefiles#testMultipleCacheFiles
Merge branch 'trunk' into MAPREDUCE-4885
MAPREDUCE-4885: minor renaming in pom.xml