Generalized FOValidationEventListenerProxy into FOPEventListenerProxy, the main proxy for FOP's own event manipulation proxy. Done because of support for overflow="hidden" vs. overflow="error-if-overflow". Switched block-level layout managers to events. Some cleanup along the way.
xmlgraphics/fop/branches/Temp_ProcessingFeedback/src/java/META-INF/services/org.apache.fop.events.EventExceptionManager$ExceptionFactory