document Zip64 stuff

git-svn-id: https://svn.apache.org/repos/asf/ant/antlibs/compress/trunk@1158784 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/changes.xml b/changes.xml
index 69e2c36..a54891b 100644
--- a/changes.xml
+++ b/changes.xml
@@ -41,6 +41,8 @@
       <action type="update" breaks-bwc="true">
         The Apache Compress Antlib now requires Apache Commons
         Compress 1.3 which in turn requires Java5 at runtime.
+        This change allows the Compress Antlib to support Zip64
+        extensions.
       </action>
       <action type="add">
         Read-only support for the Unix dump format has been added in
@@ -48,6 +50,10 @@
         &lt;dumpentry&gt; and &lt;dumpfileset&gt; resources.
       </action>
       <action type="update">
+        A new attribute zip64Mode provides finer grained control over
+        whether Zip64 extensions will be used in the &lt;zip&gt; task.
+      </action>
+      <action type="update">
         The &lt;zip&gt; task has a new attribute zip64Mode that
         controls whether Zip64 extended information is written to the
         archive.