If this is at all helpful (if anyone is even following this :) ), someone in Perth has created a new timezone definition for various unix/linux systems, for the three year trial:
http://matt.ucc.asn.au/time/ -- Daylight Saving changes in Western Australia https://launchpad.net/bugs/72125 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
