[FIXED HUDSON-3752] @Extension.ordinal() should now work, at least those that are specified on a class. As Jesse points out in https://sezpoz.dev.java.net/issues/show_bug.cgi?id=6, more changes are needed to make it work on methods and fields, but those are less frequently used. In 1.340.

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@24932 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/main/java/hudson/Extension.java

@@ -64,7 +64,7 @@ import java.lang.annotation.Target;
  * @see ExtensionList
  */
 @Indexable
-@Retention(RetentionPolicy.SOURCE)
+@Retention(RetentionPolicy.RUNTIME)
 @Target({TYPE, FIELD, METHOD})
 @Documented
 public @interface Extension {