MAPREDUCE-6549. multibyte delimiters with LineRecordReader cause duplicate records (wilfreds via rkanter)

Putting CHANGES.txt entry under 2.6.3 after the backport.

(cherry picked from commit e3e09aa1e75905db1fe377bad04756eadf1fc632)

hadoop-mapreduce-project/CHANGES.txt

@@ -25,9 +25,6 @@ Release 2.7.3 - UNRELEASED
     MAPREDUCE-5883. "Total megabyte-seconds" in job counters is slightly
     misleading (Nathan Roberts via jlowe)
 
-    MAPREDUCE-6549. multibyte delimiters with LineRecordReader cause
-    duplicate records (wilfreds via rkanter)
-
     MAPREDUCE-6583. Clarify confusing sentence in MapReduce tutorial document.
     (Kai Sasaki via aajisaka)
 
@@ -358,6 +355,9 @@ Release 2.6.3 - 2015-12-17
     MAPREDUCE-5883. "Total megabyte-seconds" in job counters is slightly
     misleading (Nathan Roberts via jlowe)
 
+    MAPREDUCE-6549. multibyte delimiters with LineRecordReader cause 
+    duplicate records (wilfreds via rkanter)
+
 Release 2.6.2 - 2015-10-28
 
   INCOMPATIBLE CHANGES