Bug 117071 MembersOrderPreferenceCache leaking a propertyChangeListener
20051109 org.eclipse.jdt.ui.PreferenceConstants#initializeDefaultValues adds a listener to JDT UI preference store but this is not deleted before shutdown.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/JavaPlugin.java
fPropertyChangeListener= new IPropertyChangeListener() {
			public void propertyChange(PropertyChangeEvent event) {
				if (newTabWidthKey.equals(event.getProperty())) {
					IPreferenceStore prefStore= getPreferenceStore();
					prefStore.putValue(oldTabWidthKey, prefStore.getString(newTabWidthKey));
				}
			}
		};
		store.addPropertyChangeListener(fPropertyChangeListener);
		
		/*
		 * Backward compatibility for the refactoring preference key. 
		 */
 
		
		
		
		
		store.setToDefault(DEPRECATED_REFACTOR_ERROR_PAGE_SEVERITY_THRESHOLD);
		
		if (!store.getBoolean(JavaDocLocations.PREF_JAVADOCLOCATIONS_MIGRATED)) {
			JavaDocLocations.migrateToClasspathAttributes();
		}
		
		ProfileStore.checkCurrentOptionsVersion();
	}
	
	/**
	 * Uninstalls backwards compatibility for the preference store.
	 */