change mapping for parmeters that take item()* to ValueIterator

[dsokolsky]

Previously we mapped item()* in a function parameter to Object[] | ValueIterator. We are changing this in 8.0-2 to be just ValueIterator. Mike, can you please change the mappings? This affects a lot of functions (108+ I think).

The following is really a note to myself: I also really need to add a note to all of these parameters (javascript only) saying something like:

If you pass in a single value, it is treated as a ValueIterator with that single item; therefore, if you pass in an array, the function will return the array. If you mean to check the values of each item in the array, then you can call xdmp.arrayValues on the array.

[dsokolsky]

I'm calling this done. If there are problems we can file individual bugs.