jdorje: Change terrain variables to use pointers to ...

This is an automated notification of a change to freeciv cvs, 
on Thu Jul 14 12:25:44 PDT 2005 = Thu Jul 14 19:25:44 2005 (GMT)
by Jason Dorje Short <[email protected]>

---- Files affected:

freeciv/ai aisettler.c aitools.c aiunit.c
freeciv/client control.c goto.c helpdata.c helpdata.h packhand.c tilespec.c tilespec.h
freeciv/client/gui-gtk-2.0 helpdlg.c menu.c
freeciv/common city.c combat.c game.c improvement.h map.c movement.c movement.h requirements.c requirements.h terrain.c terrain.h tile.c tile.h unit.c
freeciv/common/aicore pf_tools.c
freeciv/manual civmanual.c
freeciv/server citytools.c gotohand.c maphand.c maphand.h ruleset.c sanitycheck.c savegame.c settlers.c unittools.c
freeciv/server/generator mapgen.c startpos.c utilities.c
freeciv/server/scripting api.pkg api_find.c

---- Log message:
      Tag: HEAD

Change terrain variables to use pointers to struct terrains instead of
Terrain_type_id integers.  T_UNKNOWN is changed to be NULL; this may
expose bugs where T_UNKNOWN is dereferenced as a terrain type.

Patch by me in PR#13442.