improved caching for failed resolution

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@23355 71c3de6d-444a-0410-be80-ed276b4c234a

core/pom.xml

@@ -382,7 +382,7 @@ THE SOFTWARE.
     <dependency>
       <groupId>org.jvnet.hudson</groupId>
       <artifactId>xstream</artifactId>
-      <version>1.3.1-hudson-3</version>
+      <version>1.3.1-hudson-4</version>
     </dependency>
     <dependency>
       <groupId>jfree</groupId>