[Freeciv-Dev] patch: Building and terrain dependencies

[Per Inge Mathisen <permath@xxxxxxxxxxx>]

Here is a new version of the building dependencies patch with terrain
dependencies included. There was a bug in the previous patch - Hoover Dam
was set to depend on factory, which is logical but not correct... 

So far the only terrains dependecies are "ocean" (port, harbour, etc),
"hydro" (hydro plant, Hoover Dam) and "mountain" (may be of use for
modpacks). Any other dependencies needed for modpacks?

The patch has been playtested without noticing any adverse effects. Please
have a go at it and let me know what you think...

Yours,
Per

building-terrain.patch
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