Add Daylight Saving Time abbreviation inclusion (e.g. 'E%sT') for all zones in mainland Australia (+ Antarctica/Macquarie)

The australasia zone file does not incorporate daylight saving timezone abbreviations correctly. 

Parsing the current australasia zone file was returning e.g. 'EST' for both local standard time and daylight saving time in Australia/Melbourne. This problem is present throughout locations in mainland Australia (and Antarctica/Macquarie since Australian timezone rules have and continue to be used in that location).

This pull request adds the complete set of daylight saving timezone abbreviations for all rules within mainland Australia. Now the zone file is capable of returning e.g. 'EST' for local standard time and 'EDT' for daylight saving time in the Australia/Melbourne zone (and it will provide similar results for all other mainland Australia zones).

Further discussion is always welcome :) If I haven't followed the correct process or if there is a historical reason why daylight saving timezone abbreviations have been left out for mainland Australia please enlighten me (note: this pull request has nothing to do with any request to change from/to AEST/AEDT - which is the closest issue I could find for this).