Bug 88863 [Preferences] PreferencesLinkArea should be API
We need to make the preferences link area API.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/dialogs/IDEEditorsPreferencePage.java
encodingEditor.loadDefault();
		super.performDefaults();
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.internal.dialogs.EditorsPreferencePage#updateValidState()
	 */
	protected void updateValidState() {
		if (!encodingEditor.isValid()) {
			setValid(false);
			return;
		}
		
		
		super.updateValidState();
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.internal.dialogs.FileEditorsPreferencePage#performOk()
	 */
	public boolean performOk() {
		if (clearUserSettings)
			IDEEncoding.clearUserEncodings();
		encodingEditor.store();
		return super.performOk();
	}
}