Fix bug ZK-1708: Clients.showNotification doesn't work when using auto mode include component
http://tracker.zkoss.org/browse/ZK-1708
Re-fix bug ZK-1642 for IE 6/7
Merge remote-tracking branch 'VincentJian/B65-ZK-1708'
Merge branch 'master' of github.com:zkoss/zk
Merge remote-tracking branch 'VincentJian/B65-ZK-1642'