HADOOP-8832

Test Plan: N/A

Reviewers: wuzhichun, xieyuchen

Differential Revision: http://192.168.2.241/D144
MAPREDUCE-461
MAPREDUCE-4660
MAPREDUCE-4838
JobFinishedEvent parsed not valid
MAPREDUCE-5129 Add tag info to JH files
Merge branch 'workflow' into mthadoop-1.0.1