upgrade ivy to 2.1.0 final

git-svn-id: http://svn.codehaus.org/groovy/branches/GROOVY_1_6_X@19398 a5544e8c-8a19-0410-ba12-f9af4593a198
diff --git a/pom.xml b/pom.xml
index 7c0cbbf..83a0002 100644
--- a/pom.xml
+++ b/pom.xml
@@ -710,7 +710,7 @@
         <dependency>
             <groupId>org.apache.ivy</groupId>
             <artifactId>ivy</artifactId>
-            <version>2.1.0-rc2</version>
+            <version>2.1.0</version>
             <scope>compile</scope>
             <optional>true</optional>
             <exclusions>