[Freeciv-Dev] Patch to add auto shopper

[Raimar Falke <hawk@xxxxxxxxxxxxxxxxxxxxxxxxx>]

Hello freecivers

The attached patch add something which I call since there wasn't a better name 
auto
shopper. It is the implementation of the idea which I posted yesterday. It adds:
 - a popup dialog where you can select the options
 - some code to the server to buy the things which match or print some
   messages to the user

This patch is against freeciv-1.10.0 and isn't tested very well. Maybe you
can give some feedback about the idea, the user niterface and the
implementation.

Open points:
 - options aren't written to the savegame
 - to way to transfer the options from the server to the client
 - "Gtk-WARNING **: invalid cast from `(unknown)' to `GtkToggleButton'" for
   unknwon reason
 - server/plrhand:really_handle_city_buy could return failed or successful
 - cleanup particular on the server side. It is difficult to find the
   correct time in the new turn functions to call own functions.

Have fun
        Raimar

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freeciv-1.10.0-auto_shopper.diff.gz
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