[Freeciv] Irrigation at city square

["Wong TM (Huang Deming)" <lookmeow@xxxxxxxxxxxx>]

I remember in Civ2, the city square will had irrigation and road
automatically once the city is built, farmland and railway once discovered.
But in Freeciv, although the number correctly indicates that there is
irrigation in the city square, physically there is none, mine settler can
irrigate the city square for no benefit and they do it when put on auto.

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A physicist, an engineer, and a computer scientist were discussing the
nature of God. Surely a Physicist, said the physicist, because early in the
Creation, God made Light; and you know, Maxwell's equations, the dual nature
of electro-magnetic waves, the relativist consequences... An Engineer!, said
the engineer, because before making Light, God split the Chaos into Land and
Water; it takes a hell of an engineer to handle that big amount of mud, and
orderly separation of solids from liquids... The computer scientist shouted:
And the Chaos, where do you think it was coming from, hmm?

     ---Anonymous