[ADM] Fix bug about deep copy of ADM tree

[DonnaWuDongxia]

In ADM.copySubtree function, all property values had been treated as object, and been done with deep copy, but will be error for properties whose type is no object.
Another thing is if we do deep copy here, then how about all cases where we called setProperty? We need to change them all? Then what if the programmer forgot to do deep copy? So, I think we need to do deep copy in setProperty function.
For the event data, I think it may be need deep copy too.

[grgustaf]

Donna, can you explain the bug you're talking about with copySubtree? I admittedly didn't test very much when I made the change to use $.extend recently... I didn't think I was really changing the behavior very much, so I only tested a little bit.

I think non-objects will be just copied by value, so I don't know you're referring to. It seemed to work fine in the testing I did, as well.

[grgustaf]

As for setProperty, again I'd like to know what actual problem you're trying to solve?

[grgustaf]

OK, I was able to reproduce a problem with the copySubtree - thanks for catching that. I believe I've fixed it in master. As for the setProperty part, can you provide a test case where this is a problem?

[DonnaWuDongxia]

Donna sent Geoff an email about this.

[zhizhangchen]

Why do you change this? It seems there's no difference between your implementation and the old one.