Add HADOOP-7783 to CHANGES.txt

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.22@1204671 13f79535-47bb-0310-9956-ffa450edef68

common/CHANGES.txt

@@ -556,6 +556,8 @@ Release 0.22.0 - Unreleased
     HADOOP-7450. Upgrade jetty to 6.1.26.
     (Konstantin Boudnik and Jitendra Nath Pandey via shv)
 
+    HADOOP-7783. Add more symlink tests that cover intermediate links. (eli)
+
 Release 0.21.1 - Unreleased
 
   IMPROVEMENTS