svn merge -c 1453608 FIXES: HADOOP-8462. Native-code implementation of bzip2 codec. Contributed by Govind Kamat


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1453610 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-9209. Add shell command to dump file checksums (Todd Lipcon via jeagles)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1453620 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/branch-2' into branch-2-gd
Merge remote branch 'origin/branch-2-gd' into fb-MAPREDUCE-4884-branch-2-gd