doctype and namespace fix
memory leak fix

add node->isSupported()
add domimplementation->hasFeature()
add formatOutput property (extends DOM)
call xmlFreeDoc when doc is no longer referenced rather than custom code
save and s

add node->isSupported()
add domimplementation->hasFeature()
add formatOutput property (extends DOM)
call xmlFreeDoc when doc is no longer referenced rather than custom code
save and savexml now format based on formatOutput property

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updating license information in the headers.

implmentation of document ref counting for persistance
re-work of internal object handling

Inital cut of new dom extension
PHP5 only