When filing HADOOP-7372 (CHANGES.txt claims there's a 0.20.3 release)
I noticed there are fix versions for 0.20.3 and 0.20.4 on jira. If we
don't intend to release 0.20.3 (Owen, you're the RM for branch-0.20
right?) then we should remove these fix versions from jira as they're
confusing to users, and should update the releases page
(http://hadoop.apache.org/common/releases.html) to indicate there
won't be a 20.3 or 20.4 release.