AUI-649 - Update AUI TextboxList module dependencies to use YUI autocomplete

Hey Marc,

Here are the changes I made to the AUI Textbox List to use the YUI autocomplete.  Nate hasn't finished reviewing the code or source formatting it yet, but in case you wanted to see what I changed so you can leverage the autocomplete in your tag selector, it is attached.

Please let me know if you have any questions.  Thanks!

- Jon Mak