comment on groovy support

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@276077 13f79535-47bb-0310-9956-ffa450edef68

WHATSNEW

@@ -91,6 +91,8 @@ Other changes:
 * added support for branch logging via the tag attribute in <cvschangelog>
   Bugzilla Report 13510.
 
+* added support the groovy language in the script and scriptdef tasks
+
 Changes from Ant 1.5.4 to Ant 1.6.0
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