Fix bug ZK-1601: Listbox in paging mold doesn't change pages count
http://tracker.zkoss.org/browse/ZK-1601
Fix bug ZK-1602: Button with both autodisable and upload attributes set causes a javascript error
http://tracker.zkoss.org/browse/ZK-1602
fine tune ZK-1583
Merge branch '6.0' of github.com:zkoss/zk into 6.0
B60-ZK-1613: Invoke response.sendError in Weblogic server, the server will render the message as a response body
Fix bug ZK-1618: Tabpanel not follow the visible attribute
http://tracker.zkoss.org/browse/ZK-1618
Fix bug ZK-1622: Paging listbox scrollbar is wrong
http://tracker.zkoss.org/browse/ZK-1622
Bug ZK-1519: Popup disappear when mouse over on the corner where the two scrollbars meet, IE 10 only