Bug 20181 TVT2: Mnemonic doesn't work in Java Editor prefs
Japanese TVT tester found a non-functional mnemonic in Preferences>Java>Editor on the Syntax tab. Pressing Alt+B doesn't activate the bold checkbox. Build F2 NL fragments generated on 6/11 Window>Preferences Select Java Select Editor Click on Syntax tab press Alt+B... checkbox does not work.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/JavaEditorPreferencePage.java
fOverlayStore.propagate();
		JavaPlugin.getDefault().savePluginPreferences();
		return true;
	}
	
	/*
	 * @see PreferencePage#performDefaults()
	 */
	protected void performDefaults() {
		
		fFontEditor.loadDefault();
		
		fOverlayStore.loadDefaults();
		initializeFields();
		handleSyntaxColorListSelection();
		handleAppearanceColorListSelection();
		super.performDefaults();
		
		fPreviewViewer.invalidateTextPresentation();
	}
	
	/*
	 * @see DialogPage#dispose()
	 */
	public void dispose() {
		
		if (fJavaTextTools != null) {
			fJavaTextTools= null;
		}