[Freeciv-Dev] Patch to add city production in the map

[Raimar Falke <hawk@xxxxxxxxxxxxxxxxxxxxxxxxx>]

Hello freecivers

Here is the second version of a patch which:
 - show the current production of a city on the map
 - make the above an option which can be selected from the views menu
 - make the display of the city names also an option

There was an error when the city is building an improvement or a wonder. 
This version fixes this bug.

This version works only with gtk client. There is no problem adding this
also to the other clients.

        Raimar

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 email: rf13@xxxxxxxxxxxxxxxxx
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freeciv-1.10.0-city_descr2.diff
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