Update in-progress docs to target next version

Mark Craig

08.43.2013 805b716bb81b2aa8c80777ccbfea4d617a11c5f3

 opendj3/src/main/docbkx/release-notes/chap-compatibility.xml

@@ -119,7 +119,7 @@
   </listitem>
  </itemizedlist>

<!-- Not yet for OpenDJ 2.6.0.
<!-- Not yet
  <para>The <command>ldif-diff</command> command has been renamed
  <command>ldifdiff</command>, and the <option>-\-outputLDIF</option>,
  <option>-\-overwriteExisting</option>, <option>-\-sourceLDIF</option>,