Bug fixed ZK-2247: nested iframe reloading content when detached parent window
http://tracker.zkoss.org/browse/ZK-2247

Conflicts:

	zkdoc/release-note
	zktest/src/archive/test2/config.properties
Merge remote-tracking branch 'upstream/6.5'
ZK-2224 support to batchly remove component's binding to enhance performance when compoentn removed in uilifecycle