o use maven:property to glean a default instead of relying on interpolation

of ${pom} values in the plugin properties files.


git-svn-id: https://svn.apache.org/repos/asf/maven/maven-1/plugins/trunk@114559 13f79535-47bb-0310-9956-ffa450edef68

announcement/src/plugin-resources/announcement.jsl

@@ -5,13 +5,13 @@
     xmlns:j="jelly:core"
     xmlns:jsl="jelly:jsl"
     xmlns:x="jelly:xml"
+    xmlns:maven="jelly:maven"
     xmlns="dummy" trim="true">
 
   <jsl:template match="document/body/release">
 
     <x:set var="version" select="string(@version)"/>
-    <j:set var="versionVariable" value="${context.getVariable('maven.announcement.version')}"/>
-
+    <maven:property var="versionVariable" name="maven.announcement.version" defaultValue="${pom.currentVersion}"/>
     <j:if test="${versionVariable.equals(version)}">
 
       <j:useBean var="formatter" class="org.apache.maven.announcement.Formatter"/>