* CHANGES: Retroactively add "This is a CVE" marker for various 1.7.x and 1.8.x
    releases.  (A few 1.6.x markers are missing but I didn't add them.)

git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1515237 13f79535-47bb-0310-9956-ffa450edef68