add HADOOP-9417 to CHANGES.txt

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1502310 13f79535-47bb-0310-9956-ffa450edef68

hadoop-common-project/hadoop-common/CHANGES.txt

@@ -299,6 +299,9 @@ Release 2.2.0 - UNRELEASED
 
   IMPROVEMENTS
 
+    HADOOP-9417.  Support for symlink resolution in LocalFileSystem /
+    RawLocalFileSystem.  (Andrew Wang via Colin Patrick McCabe)
+
   OPTIMIZATIONS
 
   BUG FIXES