Rename Sydney tables as part of the digital restack.

ACMA.gov.au now considers the Sydney metropolitan area as one TLAP
(television license area plan) and has allocated new frequencies
which cover all the transmitters that were previously split between
au-Sydney_North_Shore (main transmitters) and au-Sydney_Kings_Cross
(in-fill transmitters).

The Sydney digital restack was completed on 18 Mar 2014.
Update comments to reflect the technical information provided by http://myswitch.digitalready.gov.au/
Change Sydney FEC settings to AUTO.

The FEC settings are not stipulated by the government as part of the
license and a number of broadcasters claim that the transmission
parameters are subject to change.

Additionally, the old settings were fec_lo=NONE, which is not completely
accurate, since the observed values are never NONE. The code in scan
will substitute FEC_AUTO for FEC_NONE, but we might as well be explicit.
Updated scanned channels for Sydney, Australia.
Merge pull request #10 from peterurbanec/digital-restack-sydney

Digital restack sydney