Merge pull request #88 from jerrywell/6.5

Bug ZK-2369: borderlayout autoscroll issue iphone5
Bug ZK-2374: touch event handling interferes with user defined jQuery version
Merge pull request #92 from hanhsu/B65-ZK-2374

Bug ZK-2374: touch event handling interferes with user defined jQuery ve...
refix ZK-2294: Combobox popup scroll back to top when navigating by keyboard
Merge branch '6.5' of https://github.com/zkoss/zk into 6.5