Bug fixed B60-ZK-1737: Typo in some zk.fmt.Number functions: varStr
(wrong) vs valStr (right)  http://tracker.zkoss.org/browse/ZK-1737
Merge branch 'B60-ZK-1737' of git://github.com/huangnoah/zk into 6.0
Add release date
release 6.0.5