[talk-au] Consistent addr:state format?

[tabjsina]

So all of Australia with the exception of Victoria is now fixed to use 
capitalized state abbreviations. As mentioned before, Victoria was the 
state that had a much closer (though still not entirely close) split 
between "Victoria" and "VIC", which leaves a whopping 32k addresses that 
need to be updated to "VIC".

While it is entirely possible (and easy) to do this via maproulette, 
I've removed the challenge as someone had pointed out to me that 32k 
individual changes might be a bit much as far as changesets go.

Are there any concerns with me doing this as a single batch change?

Thanks,
Justin