Re: ACTION-2234: Spec up changes to load.

So just to check we agree on what we are trying to achieve:

<load ref="..." resource="..."/>

The URI is obtained:
  - If there is a @resource, it is used.
  - Otherwise the binding is used.

If the result is an empty sequence, an xforms-load-error is dispatched to  
the load element.

Otherwise, the link indicated by the URI is traversed.

If traversal is not possible or fails, then an xforms-load-error *should*  
be dispatched to the load element; however, it is recognized that there  
are circumstances where this is not possible, such as when the error is  
discovered after XForms processing has ended.

=========

(
  XForms 1.1 versions did nothing for error conditions, and also allowed  
<load/> with no attributes, which also did nothing
  https://www.w3.org/TR/xforms11/#action-load
)

Steven