This will allow later to be able to operate on the binding despite the
element is borrowed.
Since the Binding itself is in a RefCell, the analysis don't need to
be anymore.
To do this change, a small change in the binding_analysis logic was required
which means that we will now detect binding loop if a binding was causing
two binding loop. (before, only one binding loop was detected)
Currently, it is a bit limited in the amount of property that it removes
because it will not remove property that are used by properties being
removed, or will consider setting properties as an usage
this implies that we need to make sure the property are initialized in
order so that constant properties that depends on other constant properties
are correctly computed
