allowing PluginStrategy to create subtypes.

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@32980 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/main/java/hudson/PluginWrapper.java

@@ -69,7 +69,7 @@ import org.kohsuke.stapler.HttpResponses;
  *
  * @author Kohsuke Kawaguchi
  */
-public final class PluginWrapper implements Comparable<PluginWrapper> {
+public class PluginWrapper implements Comparable<PluginWrapper> {
     /**
      * {@link PluginManager} to which this belongs to.
      */