Cannot recursively initialize Nodes

[ryanpoulos]

The Node class' dynamic dispatch Initialize method is currently non-reentrant. This breaks any attempt to recursively generate child nodes that may be the same type as the caller. Not sure why Initialize is currently non-reentrant, but switching to shared-clone fixes the issue and should not break any current code that uses this class (they would have to update their Initialize methods to match though).

Example of why this is needed: I have 'data type' Nodes that generate the view hierarchy to match the provided data type. If I have a type that is an array within a cluster within an array, the non-reentrancy breaks the execution at the second array since I'm currently still in an array node's Initialize method, and it cannot be reentered.

[ryanpoulos]

@becega Benji save me! :P