HADOOP-9221. Convert remaining xdocs to APT. Contributed by Andy Isaacson.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1440245 13f79535-47bb-0310-9956-ffa450edef68
Move HADOOP-9221 to correct section of CHANGES.txt.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1440248 13f79535-47bb-0310-9956-ffa450edef68