Update CHANGES.txt for recent commits to branch-2.6.

(cherry picked from commit aa2009c37bc3c47035a5aea4a7449d3fe48569d4)

hadoop-mapreduce-project/CHANGES.txt

@@ -658,6 +658,14 @@ Release 2.6.3 - UNRELEASED
     MAPREDUCE-6377. JHS sorting on state column not working in webUi.
     (zhihai xu via devaraj)
 
+    MAPREDUCE-5948. org.apache.hadoop.mapred.LineRecordReader does not handle
+    multibyte record delimiters well (Vinayakumar B, Rushabh Shah, and Akira
+    AJISAKA via jlowe)
+
+    MAPREDUCE-6481. LineRecordReader may give incomplete record and wrong
+    position/key information for uncompressed input sometimes. (Zhihai Xu via
+    jlowe)
+
 Release 2.6.2 - 2015-10-28
 
   INCOMPATIBLE CHANGES

hadoop-yarn-project/CHANGES.txt

@@ -1898,6 +1898,9 @@ Release 2.6.3 - UNRELEASED
     YARN-4344. NMs reconnecting with changed capabilities can lead to wrong
     cluster resource calculations (Varun Vasudev via jlowe)
 
+    YARN-3925. ContainerLogsUtils#getContainerLogFile fails to read container
+    log files from full disks. (zhihai xu via jlowe)
+
 Release 2.6.2 - 2015-10-28
 
   INCOMPATIBLE CHANGES