[Freeciv-Dev] [PATCH] citydlg packet traffic (PR#1234)

[Mike Kaufman <mkaufman@xxxxxxxxxxxxxx>]

the attached patch does four semi-related things:

1. move city options widgets to an array. (code cleanup, reduction)
2. stop sending city_options packets unless they actually changed.
   It was sending a packet for every button that was different when
   you switched cities. That could mean up to 6 (7 maybe) useless packets 
   per switch.
3. don't send a worklist packet on every city dialog close, only if the 
   worklist has changed.
4. don't update the worklist editor twice on city switch. I'm not sure
   what I was thinking here.

there really shouldn't be any issues with it (hopefully).

-mike

city_packets.diff
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