[tz] Ambiguous abbreviations for Australian timezones when daylight savings is in affect

[Guy Harris]

On Apr 2, 2013, at 3:56 PM, Derick Rethans <tz at derickrethans.nl> wrote:

> The localization and naming is done very well in CLDR.

...and, at least from a quick look at common/main/en_AU.xml in version 23 as downloaded from http://cldr.unicode.org, the "metazones" for Australia have:

			<metazone type="Australia_Central">
				<short>
					<generic>ACT</generic>
					<standard>ACST</standard>
					<daylight>ACDT</daylight>
				</short>
			</metazone>
			<metazone type="Australia_CentralWestern">
				<short>
					<generic>ACWT</generic>
					<standard>ACWST</standard>
					<daylight>ACWDT</daylight>
				</short>
			</metazone>
			<metazone type="Australia_Eastern">
				<short>
					<generic>AET</generic>
					<standard>AEST</standard>
					<daylight>AEDT</daylight>
				</short>
			</metazone>
			<metazone type="Australia_Western">
				<short>
					<generic>AWT</generic>
					<standard>AWST</standard>
					<daylight>AWDT</daylight>
				</short>
			</metazone>