Some nits.

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/branches/Temp_ProcessingFeedback@643785 13f79535-47bb-0310-9956-ffa450edef68

src/java/org/apache/fop/events/Event.java

@@ -31,6 +31,8 @@ import org.apache.fop.events.model.EventSeverity;
  */
 public class Event extends EventObject {
 
+    private static final long serialVersionUID = -1310594422868258083L;
+    
     private String eventID;
     private EventSeverity severity;
     private Map params;

src/java/org/apache/fop/events/EventFormatter.java

@@ -64,7 +64,9 @@ public final class EventFormatter {
                         groupID,
                         EventFormatter.class.getClassLoader());
             } catch (MissingResourceException mre) {
-                log.trace("No XMLResourceBundle for " + groupID + " available.");
+                if (log.isTraceEnabled()) {
+                    log.trace("No XMLResourceBundle for " + groupID + " available.");
+                }
             }
         }
         if (bundle == null) {
@@ -88,7 +90,9 @@ public final class EventFormatter {
                         groupID, locale,
                         EventFormatter.class.getClassLoader());
             } catch (MissingResourceException mre) {
-                log.trace("No XMLResourceBundle for " + groupID + " available.");
+                if (log.isTraceEnabled()) {
+                    log.trace("No XMLResourceBundle for " + groupID + " available.");
+                }
             }
         }
         if (bundle == null) {