WW-2587 @SkipValidation not found on superclass method

Files:
modified: /struts/struts2/trunk/core/src/test/java/org/apache/struts2/interceptor/validation/AnnotationValidationInterceptorTest.java (try)
modified: /struts/struts2/trunk/core/src/main/java/org/apache/struts2/interceptor/validation/AnnotationValidationInterceptor.java (try)