Namespace declarations not being copied in ASSIGN.replaceElement

The following line in ASSIGN.replaceElement looks wrong:

DOMUtils.copyNSContext(ptr, replacement);

I think it should be:

DOMUtils.copyNSContext(src, replacement);

The rationale is that the RE strategy should copy the attributes from the source element to the target element. Without this change, you may end up with undeclared namespace prefixes in the output of your BPEL.