yui/yui3 — pull request #573 by ericf (2013-04-01 19:35:44+00:00)
Title: Fix `Y.clone()` to quit early when trying to clone DOM nodes

This moves `Y.clone()`'s early return for DOM nodes above the call to `Y.Object()`, and fixes the issue where DOM nodes cannot be cloned in Firefox or IE.

**Note:** I did not change the is-this-a-node-instance-object test, but it could possibly be improved.