Use AEST/AEDT etc. instead of EST etc. for Australian abbreviations.

* NEWS, australasia (Aus, Australia/Darwin, AW, Australia/Perth)
(Australia/Eucla, AQ, Holiday, Australia/Brisbane, Australia/Lindeman)
(AS, Australia/Adelaide, AT, Australia/Hobart, Australia/Currie, AV)
(Australia/Melbourne, AN, Australia/Sydney, Australia/Broken_Hill)
(LH, Australia/Lord_Howe, Antarctica/Macquarie):
Prefix Australian time zone abbreviations with "A", and switch
from "ST" to "DT" to denote daylight saving time.  (Thanks to Ian
Abbott, Russ Allbery, Timothy Arceri, Alan Barrett, Stuart Bishop,
Shaun Bouckaert, Stephen Colebourne, Tobias Conradi, Mark Davis,
Robert Elz, Clive D.W. Feather, Dennis Ferguson, Edwin Groothuis,
Guy Harris, John Hawkinson, John Haxby, Brian Inglis, Paul Koning,
Kevin Lyda, Curtis Manwaring, Alan Mintz, Arthur David Olson, Matt
Paine, David Patte, Tim Parenti, random832, Derick Rethans, SM,
Peter Stagg, Rich Tibbett, Bennett Todd, and Garrett Wollman for
their contributions to this topic.)