add resourcecount to Resource Collections blurb

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@278345 13f79535-47bb-0310-9956-ffa450edef68

WHATSNEW

@@ -213,7 +213,8 @@ Other changes:
 
 * New condition <isfailure> that tests the return-code of an executable.
 
-* Added Resource Collections.
+* Added initial support for Resource Collections, including the
+  resourcecount task.
 
 Changes from Ant 1.6.3 to Ant 1.6.4
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