Add '2.3' as allowed version in ivy.xml files. (merged from trunk)

git-svn-id: https://svn.apache.org/repos/asf/ant/ivy/core/branches/2.3.x@1427564 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/java/org/apache/ivy/plugins/parser/xml/XmlModuleDescriptorParser.java b/src/java/org/apache/ivy/plugins/parser/xml/XmlModuleDescriptorParser.java
index 2c9960f..0893026 100644
--- a/src/java/org/apache/ivy/plugins/parser/xml/XmlModuleDescriptorParser.java
+++ b/src/java/org/apache/ivy/plugins/parser/xml/XmlModuleDescriptorParser.java
@@ -207,7 +207,7 @@
         }
 
         protected static final List ALLOWED_VERSIONS = Arrays.asList(
-            new String[] {"1.0", "1.1", "1.2", "1.3", "1.4", "2.0", "2.1", "2.2"});
+            new String[] {"1.0", "1.1", "1.2", "1.3", "1.4", "2.0", "2.1", "2.2", "2.3"});
 
         /* how and what do we have to parse */
         private ParserSettings settings;