support location information for a component (if it is created from a zul)
and column number for Location
add zul line number info when throw a exception or logging a message.
Merge commit 'master' into component-location-info-4mvvm
fine tune
ZK-315: DHtmlLayoutPortlet support Portlet 2.0
http://tracker.zkoss.org/browse/ZK-315
code mark for test
tune the implement to annotation
Merge commit 'annotation-location' into component-location-info-4mvvm
Merge commit 'master' into component-location-info-4mvvm
tune the implement to annotation
fine tune imple to new location annotation
testcase & fix
Merge commit 'zk-1603' into zkoss-master, this fix also fix 1595 and 1603
Merge branch '6.5-Stable' of github.com:zkoss/zk
fine tune
Merge branch '6.5-Stable' of github.com:zkoss/zk
Fixed typo
B65-ZK-1627: datebox contraint position after_* or before_* wrongly parsed by SimpleDateConstraint
fine tune ZK-315
B65-ZK-1626: Incorrect result for 'if' attribute when mixing native and zk components