Updating ant script

git-svn-id: https://svn.apache.org/repos/asf/santuario/xml-security-java/tags/1.5.6@1538965 13f79535-47bb-0310-9956-ffa450edef68

build.xml

@@ -10,7 +10,7 @@
     <property name="product.version.major" value="1"/>
     <property name="product.version.minor" value="5"/>
     <property name="product.version.level" value="6"/>
-    <property name='product.version.qualifier' value='-SNAPSHOT'/>
+    <property name='product.version.qualifier' value=''/>
     <property name="product.version" 
 	  value="${product.version.major}.${product.version.minor}.${product.version.level}${product.version.qualifier}"/>
     <property name="product_version"