an actual Reference object, so ReferenceList no longer depends on
	Reference being a Value or having a ReferenceImp. A resizing
	vector might be even better the way this is used.

	Also moved Reference to its own header and implementation file in
	preparation for reimplementing it.

        * JavaScriptCore.pbproj/project.pbxproj:
        * kjs/nodes.cpp:
        (ForInNode::execute):
        * kjs/reference.cpp: Added.
        (Reference::Reference):
        (Reference::dynamicCast):
        (ConstReference::ConstReference):
        * kjs/reference.h: Added.
        * kjs/reference_list.cpp: Added.
        (ReferenceList::ReferenceList):
        (ReferenceList::operator=):
        (ReferenceList::swap):
        (ReferenceList::append):
        (ReferenceList::~ReferenceList):
        (ReferenceList::begin):
        (ReferenceList::end):
        (ReferenceListIterator::ReferenceListIterator):
        (ReferenceListIterator::operator!=):
        (ReferenceListIterator::operator->):
        (ReferenceListIterator::operator++):
        * kjs/reference_list.h:
        * kjs/types.cpp:
        * kjs/types.h:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@1841 268f45cc-cd09-0410-ab3c-d52691b4dbfc