javadoc should check for synthesized bit on an annotation

The com.sun.javadoc.AnnotationDesc should check for synthesized bit on an annotation. This information is needed to display the repeated annotations correctly without the container in the doclet output. The com.sun.javadoc.AnnotationDesc.isSynthesized() should be implemented in com.sun.tools.javadoc.AnnotationDescImpl which should provide the correct check.