In CHANGES.txt, move HDFS-9294 to Release 2.6.4.
In CHANGES.txt, move HDFS-9294 to Release 2.6.4.

zrccxyb62/hadoop,zrccxyb62/hadoop,zrccxyb62/hadoop,zrccxyb62/hadoop,zrccxyb62/hadoop,zrccxyb62/hadoop,zrccxyb62/hadoop