Bug fixed ZK-2138: vflex="1" not working properly with groupbox
http://tracker.zkoss.org/browse/ZK-2138
Bug fixed ZK-2140: Multiple select with Shift key does not work properly
http://tracker.zkoss.org/browse/ZK-2140
Merge remote-tracking branch 'Noah/B65-ZK-2140' into 6.5
Bug Fixed B65-ZK-2118: Grid not displayed well in borderlayout [IE8] http://tracker.zkoss.org/browse/ZK-2118