creating 2.4.2 to 2.5.1 upgrade page

git-svn-id: https://svn.apache.org/repos/asf/vcl/site/trunk@1860950 13f79535-47bb-0310-9956-ffa450edef68
1 file changed
tree: c1abb00b452698c4996a55e6d050364a48db6db5
  1. content/
  2. img/
  3. lib/
  4. templates/